生肉上有很多细菌，一定要煮熟再吃。

Shēngròu shàng yǒu hěn duō xìjūn, yídìng yào zhǔshú zài chī.

There are many bacteria on raw meat, so you must cook it thoroughly before eating.

科学家正在研究这种细菌为什么会对人体产生这么大的影响。

Kēxuéjiā zhèngzài yánjiū zhè zhǒng xìjūn wèishéme huì duì réntǐ chǎnshēng zhème dà de yǐngxiǎng.

Scientists are studying why this kind of bacteria has such a big effect on the human body.

医生说，这种药可以杀死大部分细菌。

Yīshēng shuō, zhè zhǒng yào kěyǐ shāsǐ dà bùfen xìjūn.

The doctor said this medicine can kill most of the bacteria.