波纹铁屋顶a corrugated iron roof她在这个词的下面画了一条波纹线.She drew a wavy line under the word.深水池中水的表面能产生波纹.Ripples are generated on the surface of water in a deep pond....
Finally, we need some means of igniting the mixture in the top of the cylinder.最后我们需用一些装置点燃汽缸顶部的混合气体.The ortho cone helicoid was used interrsect intercept by the ortho cone helicoid and the cylinder.正圆锥螺旋面是正圆柱螺旋面被同轴正圆锥面截...
The choice of excursions was bewildering.各种各样可供选择的远足项目让人眼花缭乱。Neighbours have invited us out, given us clothes, and taken us on excursions.邻居们请我们出去吃饭，给我们衣服，还带我们去远足。Prices start at £1,095 per person, including flights, hot...