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...
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...
将空奶瓶放在门阶上。Leave empty milk bottles on the step.那个孩子正在吮吸着空奶瓶.The baby was sucking away at the empty feeding - bottle.这个盖子严实地盖在奶瓶上,保持奶嘴无菌.This top fits over the bottle and keeps the teat sterile....