Warnings of an enemy attack forced the troops onto the defensive.
显示出进攻的迹象，部队不得不进入戒备状
。
Warnings of an enemy attack forced the troops onto the defensive.
显示出进攻的迹象，部队不得不进入戒备状。
The dog jealously guarded its bone.
那狗戒备地看管着它的骨头。
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生的骚乱。"
声明：以上例句、词性分类均由互联网资源自动生成，部分未经
审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
