The 1990s witnessed a sharp downturn in the party’s fortunes.20 世纪90 年代是该党遭遇严重挫折的时期。The economy has entered a sharp downturn, and unemployment and insolvencies can be expected to increase.经济形势急转直下，失业与破产现象预计将会增多。There was...
This drugs scandal is another blot on the Olympics.这次的兴奋剂丑闻又给奥林匹克运动会抹了黑。That new factory is a blot on the landscape.那新建的工厂破坏了此地的景色There is a blot of ink on the paper.纸上有一滴墨水渍....
Frieda grinned, pinching him on the butt.弗里达咧嘴笑了，捏了捏他的屁股。My sister's always pinching me and it really hurts.我姐姐老拧我，好痛喔。He led his life , pinching and scraping.他省吃俭用地过日子....
In specific acid catalysis, the undissociated acids do not contribute.在特殊的酸催化中, 不离解的酸不起作用.The corresponding reaction of acetaldehyde is subject to general base catalysis.乙醛相应的反应服从广义的碱催化.Catalysis has increased the rate o...