地衣是一类独特的生物有机体,其体内合成了多种特殊的次生代谢产物,主要为缩酚酸、缩酚酸环醚 、 缩酚酮、二苯并呋喃等类化合物. A lot of secondary metabolites such and were produced by lichens, a class of unique organisms.
他们提着笨重的行李气喘吁吁地来到他门口。They came panting up to his door with their unwieldy baggage.房子里摆放着笨重的旧式家具。The interior of the house was furnished with heavy, old-fashioned pieces.笨重的深色桌子上嵌有颜色较浅的木头。The heavy dark table is inlaid wit...
给我看呀, 准太高难啦.Something a bit too brainy for me, I expect.看 呀 !这风景多么美丽!Behold! What a beautiful sight it is!“ 看 呀:”老板娘用刀指着叫道, “ 看那老流氓捆在那几.'See!'cried madame , pointing with her knife.'see the old villain bou...
Iraqi ground troops on the ridge above kept them completely pinned down.伊拉克在山脊上的地面部队完全的压制了他们....an Iraqi vessel heading for the port of Basra...开往巴士拉港的一艘伊拉克船The lawmakers offered prayers for the dead and called for Iraqi...