History follows a tortuous course.
历史的进程是曲折的。
The cuboidal cells often extend valve-like cytoplasmic processes which give the channels a tortuous course.
立方形间皮细胞常伸出瓣膜状胞质突起,使腹膜下小管呈蜿蜒曲折状。
A review of these 3 years shows that we have traversed a tortuous course and that our achievements are hard won.
回首这三年,我们走过的道路很不平坦,成绩来之不易。 收藏。
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