防止 + Verb Phrase/Clause
The word 防止 (fángzhǐ) means "to prevent" or "to guard against" and is used to describe stopping something undesirable from happening. It is followed by a verb phrase or clause describing the event to be prevented. For example, 防止爆炸 means "to prevent an explosion."
我们必须采取措施防止类似事件再次发生。
wǒmen bìxū cǎiqǔ cuòshī fángzhǐ lèisì shìjiàn zàicì fāshēng.
We must take measures to prevent similar incidents from happening again.
戴口罩可以有效防止病毒传播。
dài kǒuzhào kěyǐ yǒuxiào fángzhǐ bìngdú chuánbō.
Wearing a mask can effectively prevent the spread of viruses.
为了防止迟到,她每天都提前半小时出门。
wèile fángzhǐ chídào, tā měitiān dōu tíqián bàn xiǎoshí chūmén.
To avoid being late, she leaves half an hour early every day.