作用在构架外露的结构物上的载荷,大部分是由拖曳载荷构成.The major portion of the loading on an open frame structure consists of the drag loading.采用的手法一些是精细的、一些是外露的.Some of these techniques are subtle and some are blatant.外露的垫片需用铝箔胶带密封.Exposed alumi...
Don't write or draw on the wall.不要在墙上写字或画画.He draw on his cigarette and blow out a stream of smoke.他吸了一口香烟,吐出来一股烟雾.Everyone had two sheets of paper to draw on.每个人有两张可画画的纸....
你的英语学得怎样?How are you getting along with your English studies?我太笨,所以英语学得很慢.I have two left feet so I am slow in learning English.他的英语学得不错, 只是发音还不太好.His English is not bad, but his pronunciation isn't too good....