在短短的两小时内,韦布将军的救兵就可望到达.In two short hours we may look for succor from Webb.他可能已经往道申哪里去搬救兵了.He's probably halfway to Dawson by now to get help.但是如果我不去搬救兵的话, 我们所有的邻居都会有危险的.But if I don't go and get help , all our ...
Theoretically sludge yield is nil for the extended aeration process.对延时曝气法而言,理论上污泥生成量应为零.This is true for BOD removal, aeration and biological growth.这对生化需氧量的去除, 通气,生物生长都是适用的.Those that are used should be equipped with a...
This is a well designed easel which folds up quickly and neatly.这个画架设计得很好,可以迅速而整齐地折叠起来.I took it from the easel and held it up to the windows.我把画从画架上取下来,把它举到窗户前.He paused in the middle of folding up his easel.他画架收到一半,却停了...