在一位警员受到调查时,警察抱团的事并不罕见。
It's not unusual for the police to close ranks when one of their officers is being investigated.
我们自己能做的事情并不罕见。
发生这种情况并不罕见。
Now it's not uncommon, by the way, for laboratory animals in these studies to triple their body weight.
顺便说下,在实验室,让动物体重变成普通的三倍,并不罕见
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