戒备

The whole navy was placed on full alert.

整个海军都处于全面戒。

Warnings of an enemy attack forced the troops onto the defensive.

敌军显示出进攻的迹象，部队不得不进入戒。

The patrol police on duty are on the alert against any possible disturbances.

"值班巡警处于戒,付任何可能发生的骚乱。"

The dog jealously guarded its bone.

那狗戒地看管着它的骨头。