The recruits were thoroughly vetted before they were allowed into the secret service.
情报机关招募的
成员要经过严格的
。
The recruits were thoroughly vetted before they were allowed into the secret service.
情报机关招募的成员要经过严格的。
She took her old dog to the vet and he put it to sleep.
带那条老狗到兽医那里，兽医给它施行了安乐死。
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