I know how to darn, and how to sew a button on.我会打补丁，缝纽扣。There's not a darn thing he can do about it.他对此根本无能为力。We start working pretty darn early.我们一大早就开始工作。...
The Irvine group and their collaborators are testing whether lasers do the job better.欧文研究小组和他们的合作伙伴正在测试激光是否会更为有效。Professor Orr has developed interesting ways of tagging chemical molecules using existing laboratory laser...