他把铁锹插到地里，开始卖力地干了起来。He sank the spade into the ground, and went at it.在花园里挖土的最好工具是铁锹.The best implement for digging a garden is a spade.这铁锹不中用, 我去换一把吧.This spade is no good. I'll go and get another one....
They may go hiking around the island, or swimming in the ocean.他们可以绕岛健行或在海洋里游泳.I think I'll pass on the hiking next time.我想远足的事下次再说吧。World - class skiing, mountain climbing, mountain hiking and white - water rafting...
The hydrophobicity is related to molecular volume and polarity.分子的疏水性跟分子的体积和极性有关.The grafted membranes had good hydrophilicity compared with the hydrophobicity of base film.从各个角度对膜的亲水性能作了定量研究,提出了水合数与表面自由能的计算方法.SVI was di...