姑娘的兴趣开始集中在那件作品上,别的事都忘了。
The girl's interest began to fasten itself upon the work and she forgot everything else.
市立学校从去年开始集中管理。
The administration of city schools was centralized last year.
好,让我们开始集中注意力吧,还是磷呢?
All right. So, let's focus our attention up here now, or whether it's between phosphorous.
All right. So, let's focus our attention up here now, or whether it's between phosphorous.
好,让我们开始集中注意力吧,还是磷呢?
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