Warnings of an enemy attack forced the troops onto the defensive.
敌军显示出
迹象，
队不得不入戒备状
。
Warnings of an enemy attack forced the troops onto the defensive.
敌军显示出迹象，队不得不入戒备状。
The dog jealously guarded its bone.
那狗戒备地看管着它骨头。
The patrol police on duty are on the alert against any possible disturbances.
"值班巡警处于戒备状,随时准备应付任何可能发
骚乱。"
声明：以上例句、词性分类均由互联网资源自动
，
分未经过人工审核，其表达内容亦不代表本软件
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