Crucially, these cells also create their own sounds as they expand and contract.

关键在于，这些细胞在扩展和收缩的同时也制造出了自己的声音。

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And we want to watch them and help them expand, because as they expand, more and more people find work.

我们要关注它们，而且要帮助它们发展壮大，因为随著它们的壮大，更多的人会找到工作。

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Small Banks have maintained fast profit growth as they expand assets more aggressively than larger rivals.

中小银行保持较快利润增长，因为它们更为激进地扩大资产规模。

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As they expand, they increasingly need workers able to handle the complexities of multi-site operations.

ECONOMIST: Human resources

Hedge funds may be gaining fame and fortune as they expand, but they may be losing part of their soul.

ECONOMIST: Buttonwood

Grocery stores, in general, have seen a sharp spike in theft as they expand their product offerings beyond food and beverage categories.

FORBES: Why Do People Steal Meat From Grocery Stores?