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1·The policemen keep order in the streets.

警察在大街上维护秩序。

2·Policemen keep order in the streets.

警察在街上维持秩序。

3·So our duty was to keep order.

所以我们的任务是维持秩序。

4·They will be trying to keep order.

他们将想法维持次序。

5·And the police stepped in to keep order.

连警察也介入来维持秩序。

6·Because they will be trying to keep order.

因为他们将费很大力气去维持秩序。

7·Some of the new teachers can't keep order.

有些新老师不能维持课堂秩序。

8·That young teacher can't keep order in her class.

那位年轻老师不能在班上维持秩序。

9·Some teachers find it difficult to keep order in class.

有些老师觉得维持课堂秩序不容易。

10·The general said his sole mission was to keep order on the base.

将军说，他的主要任务是维护基地的秩序。