When you breathe out, you relax your muscles so that your lungs are well emptied, but without straining.

当你呼吸，你可以放松您的肌肉，使您的肺，以及掏空，但没有紧张。

youdao

The playwright does something remarkable in this scene, but without any impression of straining after an effect.

剧作家在这场中有许多惊人妙笔，但并不给人留下竭力追求表面效果的印象。

youdao

And since the screen is not backlit but imitates real ink and paper, Kindle owners can read for hours without straining their eyes.

屏幕不是背光式的，但是模仿了真正的墨迹和纸张，Kindle的用户阅读几个小时眼睛也不会疲劳。

youdao

It was still legible enough without the backlight, but it definitely took some straining.

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