她选了低速挡小心翼翼地沿小径下行。She selected a low gear and started down the track carefully.压下挡杆，直到听到挡挂好。Press the lever until you hear the catch engage.使用自动搅拌器时应该选用慢挡。Electric whisks should be used on a slow speed....
Although these vegetables adapt well to our temperate climate, they tend to crop poorly.虽然这些蔬菜作物很适应我们这里温和的气候，它们的收成却很差。Metals which were mutually soluble would tend to give strong junctions.可互溶的金属趋向于产生牢固的结合点.Morals tend t...