Formerly most of our household utensils were made of brass.以前我们家庭用的器皿多数是用黄铜做的.Some utensils were in a state of decay when they were unearthed.有些器皿在出土时已经残破.Pens and pencils are writing utensils.钢笔和铅笔是书写工具....
Oil majors need not fear being unable to sell their crude.大型石油公司无需担心原油销售不出去。A crude oil slick quickly spreads out over water.原油泄露后的浮油很快在水面上扩散开来。Don't be crude tonight, Bernard, it doesn't become you.今晚别说荤话，伯纳德，...
哈!我是这么勇敢, 瞧我失速的样子多衰.I'm so brave, at how well I'm stalling.但是,系统的“危险”响应频率强烈地依赖于其旋转失速的传播频率.But the resonant response frequency strongly depends on the frequency at which the stall cell rotates.桨叶气动力计算采用时域非定常空气动力...