用销钉在顶上加固防护网，防止叶子落入。Peg down netting over the top to keep out leaves.施工人员将不得不另外用木料加固现有的托梁。The builders will have to strengthen the existing joists with additional timber.所有的门上都有钢筋条加固。There are reinforcement bars on all do...
显然,凡听到过他对困难大声吵嚷的人,都知道他脾气暴躁.His bilious temperament was apparent to all who heard him rant about his difficulties.对困难推三阻四可不是他的作风.To put off difficulties is not in his character.她对困难毫不在意,总是而带笑容.She can shrug off her troubl...
α粒子是从天然放射性蜕变得到的带正电的氦核.Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.粒子 —— 氦核 —— 正通过试管被抛出, 从而在试管中形成人造迷雾.Alpha particles -- helium nuclei -- were being hurled through the tube...