士兵7点起来操练3个小时。Soldiers are up at seven for three hours of exercises.二战期间，该地区被用来操练火炮射击。During the Second World War the area was used for gunnery practice.上尉让他的士兵做各种操练.The captain set his soldiers various exercises....
Bite block and tongue depressor. insuring unobstructed ventilation.用于防止舌后坠, 保障患者正常通气.I shall not rest satisfied with merely employing my capital in insuring ships.光是在船舶保险上投资我才不满意呢.The joint of shell and cover is the for ...
...a livelier, more candid and more discursive treatment of the subject.对该主题的更生动、更坦率、更发散性的论述I disagree. Brighton's livelier.我不同意, 布莱顿城更为热闹.I disagree. Brighton's livelier. And it has more interesting buildings....
Four years have elapsed since he went to London.自从他去了伦敦,已过了四年.Forty-eight hours have elapsed since his arrest.从他被捕至今已经过去48小时了。Incommunicative as he was, some time elapsed before I had an opportunity of gauging his mind.由...
以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 proparediol acetal was synthesized by using stannous chloride as catalyst.以非质子酸氯化亚锡为催化剂,催化合成了丁醛-1,2-丙二醇缩醛.Butyraldehyde 1,2 propanediol acetal was synthesized by using st...