The progresses in five - membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed.综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用....
Whoops, it's past 11, I'd better be off home.哎呀，11点多了，我最好还是回家吧。It's not like you to be off your food.胃口不好，这可不像你了。Well, I'd better be off. Good day to you.好啦，我得走了，再见。...
Then suddenly, the engine coughed, spluttered and died.接着，发动机突然咔咔地响了几声，然后就熄火了。Other niceties are a reversing safety camera, an engine start button and keyless entry.其他细节是扭转安全摄像头, 发动机启动按钮和无钥匙进入.After the train got to the ...