When experimental populations are set up under simple laboratory conditions, the predator often exterminates its prey and then becomes extinct itself, having nothing left to eat.

当实验种群在简单的实验室条件下建立起来时，捕食者往往会消灭它的猎物，然后自己也走向灭绝，因为没有东西可以吃。

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The magazine says the DNA was tested under stringent laboratory conditions to obtain the results.

该杂志说，为了保证结果的可靠性，DNA的检测是在极其严格的实验条件下进行的。

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The script was created under controlled laboratory conditions to ensure the accuracy of the results.

为了确保结果的 准确性，这个脚本创建于受控的实验室条件下。

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Once the cremations have been removed from the urns, the bones will be cleaned and dried under laboratory conditions.

BBC: Secrets of St Albans' Roman burial urns unlocked

"What was seen under laboratory conditions has probably already taken place in any number of commercial fishing grounds, " warned the researchers.

BBC: Fish on a trawler boat

Samples of 400-year-old plants known as bryophytes have flourished under laboratory conditions.

BBC: Centuries-old frozen plants revived