Concerned parents want to know how to help their stressed-out, over-worked, too active kids.

许多家长忧心忡忡，想知道如何来帮助他们那些压力过大、功课过多、活动过频的孩子们。

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They are active enough, too active.

他们十分活跃，甚至是太过活跃。

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If too active, it can cause the rampant reproduction seen in cancer cells.

如果端粒酶过于活跃，就会导致类似癌细胞的繁殖过快。

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But counterfeit drugs may contain too much, too little or none of the active ingredients of the real thing.

VOA: special.2010.02.22

As a result, some genes become too active and others fail to work at all.

ECONOMIST: Cloning around

"I think there is a general hesitancy given where we are as a team to become too active too early in free agency, " Alderson said.

WSJ: When Will the Mets Become Buyers?

The fees in active funds are too high, the talent too scarce, and competition too intense for active managers to outperform indexing in the long-term.

FORBES: 5 Lies About Index Funds