我拒绝接受帮助的时候时常显得粗鲁无礼。I was often rude and ungracious in refusing help.其他时候，他会强迫她在完全无人帮助的情况下自己行走。At other times, he'd force her to walk totally unassisted.他在无人帮助的情况下自己戒除了毒瘾。He overcame his addictions unassisted....
In the present study, gradients of gentamicin along the cochlea were measured.在目前的研究之中, 可以测量庆大霉素沿着耳蜗的浓度梯度分布.Across geographic gradients, Levins expects allopatric races or coenospecies exist.穿过地理梯度, 莱文斯预料有分布区不重叠的小种或近群种.T...
The fields are crisscrossed by irrigation canals and ditches.田野上沟渠纵横.We moved through fields and over ditches.我们穿过田野,跨过沟渠.The rain has filled up the ditches again.雨水又把沟渠给灌满了....