While experiments subsequently confirmed that such a procedure increases phytoplankton growth, field tests have shown that such growth does not significantly lower atmospheric carbon dioxide.

虽然后来的实验证实，这种方法增加了浮游植物的生长，但实地试验表明，这种生长不会显著降低大气中的二氧化碳。

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There is no precedent for such a procedure.

这样的手续是没有前例的。

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Such a procedure complicates the task of grading.

这样的程序使评分的任务复杂化。

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In the case of cardiac implants, not all require removal, and such a procedure may do more harm than good.

FORBES: Magazine Article

The US operation is the first time such a procedure has been repeated outside the Turkish hospital which pioneered it.

BBC: Heart bypass - with local anaesthetic

The US operation was the first time such a procedure had been repeated outside the Turkish hospital which pioneered it.

BBC: heart op