A1 noun 中性 #4,623 最常用

bacteria

/bækˈtɪəriə/

Bacteria are very small living things that exist almost everywhere. While some can cause diseases and make people sick, many types are helpful for our health and the environment.

例句

3 / 5
1

You should wash your hands with soap to kill the bacteria.

You should wash your hands with soap to kill the bacteria.

2

The researchers identified several types of bacteria in the water supply.

The researchers identified several types of bacteria in the water supply.

3

Gross, I bet there are so many bacteria on that old sponge!

Gross, I bet there are so many bacteria on that old sponge!

词族

名词
bacteria
副词
bacterially
形容词
bacterial
相关
bacterium
💡

记忆技巧

Think of the 'bac' in bacteria and a 'back'—if you have bacteria on your back, you need to wash it!

快速测验

The doctor said that the illness was caused by ____.

正确!

正确答案是: bacteria

例句

1

You should wash your hands with soap to kill the bacteria.

everyday

You should wash your hands with soap to kill the bacteria.

2

The researchers identified several types of bacteria in the water supply.

formal

The researchers identified several types of bacteria in the water supply.

3

Gross, I bet there are so many bacteria on that old sponge!

informal

Gross, I bet there are so many bacteria on that old sponge!

4

The study explores how bacteria develop resistance to common antibiotics.

academic

The study explores how bacteria develop resistance to common antibiotics.

5

Our new cleaning product is guaranteed to eliminate 99% of surface bacteria.

business

Our new cleaning product is guaranteed to eliminate 99% of surface bacteria.

词族

名词
bacteria
副词
bacterially
形容词
bacterial
相关
bacterium

常见搭配

harmful bacteria harmful bacteria
beneficial bacteria beneficial bacteria
kill bacteria kill bacteria
spread bacteria spread bacteria
bacterial infection bacterial infection

常用短语

good bacteria

healthy microorganisms in the body

gut bacteria

microorganisms living in the stomach/intestines

bacterial growth

the increase of bacteria numbers

容易混淆的词

bacteria vs virus

Bacteria are living cells that can live on their own, while viruses need a living host to survive.

bacteria vs bacterium

Bacterium is the singular form (one), while bacteria is the plural form (many).

📝

使用说明

In everyday English, 'bacteria' is often used as a collective noun, but in scientific contexts, it is strictly the plural of 'bacterium'.

⚠️

常见错误

Many learners say 'a bacteria', but they should say 'a bacterium' or just 'bacteria' when talking about them in general.

💡

记忆技巧

Think of the 'bac' in bacteria and a 'back'—if you have bacteria on your back, you need to wash it!

📖

词源

From the Greek word 'bakterion', meaning 'small staff' or 'rod', because the first bacteria seen under a microscope were rod-shaped.

语法模式

Plural noun (singular: bacterium) Usually takes a plural verb (e.g., 'Bacteria are...')
🌍

文化背景

In modern health culture, people often distinguish between 'bad' bacteria that cause illness and 'good' bacteria found in foods like yogurt.

快速测验

The doctor said that the illness was caused by ____.

正确!

正确答案是: bacteria

更多Health词汇

nose

A1

The nose is the part of the face located above the mouth that you use for breathing and smelling. It contains nostrils which allow air to enter the respiratory system.

neck

A1

The part of the body that connects the head to the rest of the body. It supports the weight of the head and allows it to turn and move.

chest

A1

The chest is the upper front part of the human body between the neck and the stomach. It contains important organs like the heart and the lungs.

knee

A1

The joint between the thigh and the lower leg in humans. It is a vital part of the body that allows the leg to bend and supports the body's weight while standing or moving.

heart

A1

The organ in your chest that pumps blood through your body. It is also used to represent the center of your emotions, especially love.

cough

A1

A cough is a sudden, noisy expulsion of air from the lungs that usually happens involuntarily. It is often a symptom of a cold, the flu, or an irritation in the throat.

stomachache

A1

A pain in a person's stomach or the area around it. It is a common symptom often caused by eating too much, poor digestion, or a mild illness.

dizzy

A1

Dizzy describes a feeling where you feel like you are spinning or losing your balance. It often happens when you are sick or if you turn around in circles very quickly.

nausea

A1

Nausea is the feeling of being sick in your stomach and wanting to vomit. It often happens when you are ill, traveling in a car, or after eating bad food.

vomit

A1

Vomit is the food and liquid that comes out of your stomach through your mouth when you are sick. It is the physical substance produced after throwing up.

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