[fáng bèi]
guard against; take precautions against; premunition
take precautions against fire
防備火災(zāi)
be prepared for surprise attacks by the enemy
防備敵人突然襲擊
protect the children from catching cold
防備孩子們受凍
Close the gate of the pen properly to prevent the sheep from getting away.
把羊圈關(guān)好，防備羊群跑掉。