Police were on guard at Barnet town hall.
警察在巴尼特市政厅值守。
At the outset, it seemed necessary to be on guard against the other two.
一开始，似乎有必要提防另外两个。
The border guards are on guard.
边防战士在站岗。
Canada, we stand on guard for thee.
噢！加拿大，我们为你挺立护防。
Two soldiers must be on guard all night.
两名战士必须通宵警戒。
I must protect myself and be on guard.
我必须保护自己、保持警惕。
But bid true knowledge stand on guard.
但要吩咐真知识看守着门口。
Two soldiers must be on guard all night.
必须有两个士兵整夜站岗。
There are soldiers on guard at the gate.
大门口有士兵在守卫。
The soldier who is on guard is my friend.
那个站岗的战士是我的朋友。
On guard, being awake while others sleep.
警戒的，他人尚在沉眠时就已经苏醒。
The police are on guard at that building.
警察守卫着那栋大楼。
The world is alert and on guard as never before.
世界从没有向现在这样保持警惕和戒备。
A sentry was on guard at each of the gates.
每个大门有一名哨兵站岗。
All this time, the mother is constantly on guard.
在这段时间内，章鱼母亲一直在警戒状态。
Always on guard against shadowing submarines.
时刻警惕跟踪的潜艇。
Be on guard. There are pickpockets around here.
要提高警惕，这里有扒手。
While danger threatens, we must all be on guard.
危险正在逼近，我们必须保持警惕。
We have to be on guard against information theft.
我们必须警惕反对信息偷盗。
"I already do a lot," I said, immediately on guard.
“我已经做得不少了，”我马上警觉起来，说道。
You are supposed to be here on guard at any moment.
你应该时时刻刻守在岗位上。
Thus, you should be on guard against this confused mapping.
因此，您应该谨防这种有混淆的映射。
There are two soldiers on guard at the gate of the prison.
监狱门口有两个士兵站岗。
Be on guard against those who are jealous of your success.
要提防那些嫉妒你的成功的人。
He then spoke earnestly to the Delaware who stood on guard.
然后，又对守卫在门口的特拉华人匆匆嘱咐了几句。
You should be on guard when a stranger comes to your doors.
当陌生人站在你家门前是，你应该有所堤防。
If we are alert enough, we'll notice that we are always on guard.
如果我们足够警惕，你会发现我们经常是在站岗。
If we are alert enough, we'll notice that we are always on guard.
如果我们足够警惕，你会发现我们经常是在站岗。
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