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- Be on guard when somebody flatters you. 有人奉承你时，一定要当心。
- While danger threatens we must all be on guard. 危险正逼近，我们必须保持警惕。
- A sentry stood on guard at the corner. 一个哨兵在角落里站岗。
- There are soldiers on guard at the gate. 大门口有士兵在守卫。
- Housework is low on her list of priorities. 在她那些非做不可的事情中，家务活并不重要。
- That task rates low on my priority list. 那件事情并不是我的当务之急。
- Be on guard against those who are jealous of your success. 要提防那些嫉妒你的成功的人。
- We must be on guard against hidden enemies. 我们必须警惕暗藏的敌人。
- The village is located low on the slope of a hill. 这村庄处在山坡低处。
- We thought it best to be on guard. 我们觉得最好还是保持警锡。
- He told us again and again to be on guard. 他一再要我们提防。
- The citizens were warned to be on guard against a sudden night attack. 市民们得到通知，要提防夜间的突然袭击。
- Measuring low on a scale of verbal ability. 语言表达能力程度低的
- Try to look unimportant, they may be low on ammo. 试着让自己别那么显眼，他们（敌人）的弹药可能不是很充足。
- We should be on guard against the enemy's invasion. 我们要防范敌人的入侵。
- He seems so low on energy since his illness. 自从生病之后他就一直郁郁寡欢。
- The police are on guard at that building. 警察守卫着那栋大楼。
- The sun was a huge ball of fire low on the horizon. 落在地平线上的太阳像个大火球。
- We should be on guard against such people. 我们应警惕这种人。
- We' re ( running ) low on petrol. 我们的汽油不多了.
