test frame for bifocus lenses 释义双焦点透镜试镜架
The test lenses box is an ophthalmic measuring instrument used for checking the dioptric situation of peoples eyes.
验光镜片箱是用来检查人眼屈光状态的眼科计量器具，验光镜片的准确与否，直接影响患者的身心健康。
The night before Day Two’s shoot, I went in with a model to test out the lighting, get a feel for the space to determine which lenses to use, and just be totally prepared for Day Two.
在第二天拍摄的前一天晚上，我到了影棚并且和模特进行了布光测试，根据空间来决定使用那只镜头，并且为第二天的拍摄做好充分准备。
There are some reasons why classic books can do that: they have stood the test of time, they give you different "lenses" to look through, and they will most likely be relevant even to the far future.
原因在于，这些经典书籍经得住时间的考验，让你透过不同“镜头”审视问题，而且它们极有可能与未来相关。
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