without strain

基本解释

He chose the GM buses because they use an automatic transmission and diesel boosters that provide power to scale inclines without strain.
他之所以选择美国通用汽车是因为他们使用的是自动转换装置和能够提供动力来测量没有张力的斜坡的柴油推进器。
Lausanne is the most spectacular and vibrant city on Lake Geneva, whosesteep hills, crowned by a Gothic cathedral, can be ascended without strain inhigh-tech funiculars.
如今洛桑市已经成为日内瓦湖边最壮观和充满生机的一座城市了。其陡峭的山坡被哥特式的大教堂坐拥着，这些山坡即使不使用高空索道，也是可以到达的。
And numerous experiments have shown once the concept of self is changed, other things consistent with the new concept of self are accomplished easily and without strain.
^而且大量事实证明，自我感观一旦改变，其他一些与新的自我感观相一致的事情就可以轻而易举且毫不费力地完成。

Imagine instead an iPad that you can fold in your pocket, recharge almost never and hold with one hand without wrist strain.
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But I was THRILLED this morning when I was able to log in to my college website and read the class discussion forums on my phone without eye strain, frustration or aggravation.
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Reading on a screen without eye strain?
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