Meaning of fáng:
防
to protect; to defend; to guard against; to prevent
Tā dài kǒuzhào shì wèile fáng gǎnmào.
他戴口罩是为了防感冒。
He wears a mask to protect against colds.
Wǒmen xūyào jiànlì yīgè xìtǒng lái fángzhǐ rùqīn.
我们需要建立一个系统来防止入侵。
We need to establish a system to prevent invasions.
Wèile fángzhǐ huǒzāi, wǒmen dìngqī jiǎnchá diànqì shèbèi.
为了防止火灾,我们定期检查电气设备。
To guard against fires, we regularly inspect electrical equipment.
Wèi le fángzhǐ gǎnrǎn, wǒmen yīnggāi jīngcháng xǐshǒu.
为了防止感染,我们应该经常洗手。
To prevent infection, we should wash our hands frequently.