As a timepiece, it's comparable to digital watches circa 1978: the screen is usually in a black, juice-conserving state, so to check the time you need to press the power button.

作为一个计时器，它和1978年左右的电子表差不多：屏幕平时是黑的，好像在保存果汁一样，所以你需要按下电源按钮才能查看时间。

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Wittman takes the painting into the bathroom and uses a miniature ultraviolet lamp and a black light to check it for signs of forgery or damage.

惠特曼把画拿进浴室，用微型紫外线灯和黑光灯检查了签名的真伪和破损情况。

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One of the best ways to check if the requirements are complete is to try to design black-box test cases against them.

检查需求是否完整的一个最好的办法就是设计一个与之相对应的黑盒测试用例。

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For their part, the Democratic presidential contenders are busy courting black leaders, hoping to check any move toward a black presidential candidacy.

CNN: From Protest To Politics

Burberry, famous for its red, black and camel check, itself worried investors by warning of a slowdown last September.

BBC: From the section Business

Among the retailers we tracked, Best Buy had the greatest proportional increase in check-ins during Black Friday and over the course of the weekend, which translated into a noticeable bump in its stock immediately after the weekend.

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