The main problems of the camshaftless valve actuation are long response time, hard valve landing, high power consumption and complex…
无凸轮轴气门驱动的主要问题是响应速度不够高、气门落座冲击、能耗过高以及驱动系统复杂昂贵。
Some economist argue that emigration can be a useful safety valve in hard times, reducing the numbers of the unemployed and avoiding the debilitating effects of long-term unemployment.
一些经济学家指出在苦难时期移民可能是一个平安的阀门。这样可以减少失业率，还能避免长期失业的影响。
I took a sip, and some hard, my mother told me, the pressure valve beating after also continue to cook for ten minutes before the cease-fire, oh, so that is what it is!
我尝了一口，果然有些硬硬的，妈妈又告诉我，压力阀跳动后还要继续煮十分钟才可以停火，哦，原来如此！
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