Variational principles play an important role in the formulation of many problems of mathematical physics.变分原理现在许多数学物理的表述中起着重要作用.Bernardine: You're quite wrong there. It's a special formulation that's just...
他能表演好几种令人惊叹的把戏，包括哑剧和玩杂耍。He can perform an astonishing variety of acts, including mime and juggling.社区变成了玩杂耍的、踩高跷的和扮装皇后的天地。The neighborhood is given over to performers, stilt walkers and drag queens.我不会玩杂耍。I can't ju...
Inconsiderate neighbours can be more than an annoyance.不为他人着想的邻居会非常惹人厌。Motorists were criticised for being inconsiderate to pedestrians.开车的人因不考虑行人而受到指责。It was inconsiderate of you not to call.你连个电话也不打，不够体谅人。...
She leaned over the balustrade and shouted to the man downstairs.她俯身在阳台栏杆上对楼下的人们喊着.I shouted out "I'm OK"我大声喊道“我没事”。The burly brute swaggered forward, towering over me, and shouted...五大三粗的恶汉趾高气扬地走过来，居高临下地对我咆哮着。The h...
Isopentyl lactate was synthesis from acid and isopentyl alcohol in the presence of ferric chloride hexahydrate.在六水三氯化铁存在下可以由乳酸和异戊醇合成乳酸异戊酯.Ferric Chloride alone gives polymer with benzene.三氧化铁可单独催化苯的聚合.The ferric acetylac...