to protect sb/sth from sth or to protect sb/sth against sth保护…免受…
She had his umbrella to protect her from the rain.她有他的伞来挡雨。
A purple headscarf protected her head against the wind.一条紫色头巾为她挡风。
Bark can be used to protect the plants against slugs.茎皮可用来保护植物免受鼻涕虫的侵害。