Wind it like a watch with a key that's stored underneath the barrel, and when it's 'fully loaded' use your thumb to pull back the safety lever. Then squeeze the trigger.

用放置在枪管底端的转柄给它像手表一样上发条，当发条“全部上满”之后，用你的大拇指向后拉动枪栓，然后扣动扳机。

youdao

There have also been safety concerns, with signs that dopamine neurons developed from human stem cells can trigger the growth of tumors.

此外，尚有安全性方面的顾虑，因为有迹象表明从人干细胞分化来的多巴胺神经元可能引发肿瘤生长。

youdao

Additionally, there was an automated grip safety below the trigger guard.

此外，有一个低于触发自动抓安全防范。

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Now some doctors seem ready to revolt against the resulting hair-trigger safety environment--even as the debate about Vioxx and drugs like it rages on.

FORBES: In Vioxx's Wake

Might food safety trigger a trade war between the U.S. and China that yuan revaluation and the bilateral trade balance couldn't?

FORBES: Magazine Article

The new campaign shows how pharmaceutical companies are trying to adapt the marketing of their products to a climate of hair-trigger concern over drug safety.

FORBES: Magazine Article