protect plants against frost保护植物以防霜冻
protect oneself against earthquake地震中自救
protect somebody against保护某人免遭
protect oneself against diseases保护自己不得病
Protect Grade against UVB紫外线防护等级
protect A against B保护A免遭B的危害
protect slope against sliding抗滑护坡
Protect income against disability保障您的收入不会受因残疾而失去工作能力
protect yourselves against crime保护你自己防范犯罪行为