He grabbed into the ooze and came up clutching a large toad.他把手伸进淤泥里捞摸，结果抓上来一只巨大的蟾蜍。Both the toad and frog are amphibian.蟾蜍和青蛙都是两栖动物.The toad had changed its colour to blend in with its new environment.蟾蜍已经变色，和新的环境融为一体。...
Is the appointment of worker-directors to be mandatory?工人董事的任命是不是强制性的？Islanding detection is a mandatory function for grid - connected photovoltaic ( PV ) converters .孤岛检测是 光伏 并网逆变器所必备的功能.Competent geologic advice is man...
He rued the day they had bought such a large house.他懊悔他们买了这样大的一所房子。She rued the trip with him.她后悔不该和他去旅行.He rued the day that he rode the motorcycle because he fell off and broke his leg.他懊悔那天开摩托车时摔断了腿....
他的散文文笔有力、内容庞杂，有时几近晦涩。His prose is vigorous and dense, occasionally to the point of obscurity.“我不同意，”她说道，对自己的声音如此响亮有力而感到惊讶。"I don'tagree," she said, surprised at the strength in her own voice.她像个男人似的握了手，坚实而又有力。She sh...
Donkeys are reputed to be the most recalcitrant animals.驴被认为是最倔强的牲畜。The University suspended the most recalcitrant demonstraters.这所大学把几个反抗性最强的示威者开除了。Questions about norms and spectra are likely to be recalcitrant.有关范数和谱的...