每天早晨，清洁工们会把一切都打扫得干干净净。Each morning cleaners make sure everything is spotless.我已安排了在清洁工回来之前每天的清洁工作。I have organized the cleaning on a day-to-day basis , until our usual cleaner returns.旅馆清洁工拿着水桶和拖把进来.The hotel cleaner ent...
现在，99%的小学生都亲手操作过电脑。Ninety-nine per cent of primary pupils now have hands-on experience of computers.这是他亲手种的花.This is the flower he planted with his own hands.这些蛋糕是你们亲手做的 吗 ?Did you make these cakes yourselves?...
Dibenzofuran ( DF ) is one of the model compounds for the study of biodegradation of dioxin - like pollutants.二苯并呋喃 ( DF ) 是研究二英类化合物生物降解的模式化合物之一.The experimental results show that the biodegradation of dinoseb is the mor...
可以实验测定氘的结合能.The binding energy of the deuteron can be found experimentally.更为活跃的是氢的较重同位素, 氘和氚.More reactive are the heavier isotopes of hydrogen, deuterium and tritium.对于单晶,氘化的这种优点并不是必不可少的.This advisability of deuteratio...
他穿着高及膝盖的皮护腿,留着海象般的八字胡,真是个古怪的老家伙.He is the queer old duck with the knee - length gaiters and walrus mustache.海象的外形是从海牛物种里演化而成.The shape of Walrus evolved out of the Manatee species.那只老海象慢慢地转过头来,睁开了眼睛.The old walrus turned...