另两个为胸腺嘧啶和胞嘧啶, 即称为嘧啶的单环结构.The other two, thymine and cytosine, are single ring structures called pyrimidines.直到不久以前,人们对胸腺的功能尚不明了.The function of the thymus was unknown until relatively recently.动物的免疫系统由两个主要部分组成,即胸腺和骨髓系统.I...
When dogmatism turns into its opposite, it becomes either Marxism or revisionism.教条主义走向反面, 或者是马克思主义,或者是修正主义.The theory of the dictatorship of the proletariat is the quintessence of Marxism.无产阶级专政的理论是马克思主义的精髓.Marxism poss...
As the egg whites cook, they coagulate and rise to the surface.蛋白一煮就会凝结，并且浮起来。Blood began to coagulate around the edges of the wound.血液开始在伤口的边缘凝固。Most polymer emulsion may coagulate when they enter waste streams.多数聚合物乳浊液...
我们认为偶然间撕碎一只纸盒,只是一件很小的损失而已.We counted an occasional torn box a small loss.装牛奶的硬纸盒壁常常向外弯曲.The sides of a cardboard carton of milk will often curve outwards.他把那些纸盒捆扎在一起.He lashed the cartons together....
to suffer from claustrophobia患幽闭恐怖症I hate lifts — they give me claustrophobia.我讨厌电梯——电梯使我有幽闭恐惧感.People with claustrophobia have a horror of being trapped in the lift.有幽闭恐怖症的人极度恐惧困在电梯里....
众所周知，雷恩的墓志铭中写道，大教堂本身就是他的纪念碑。As Wren's epitaph famously declares, the cathedral itself is his monument.这个城市本身充满活力，个性十足。The town itself was full of life and character.鼓励教师调动本身不会消弭教学队伍中的种族隔离。Encouraging teacher transfe...