我是说，水培法并不是我的专长，但是从我读到的研究来看，我们在讲是19世纪，如果你真的延伸一点可能就是17世纪。
I mean, hydroponics isn't really my specialty but from the research I have read, we are talking the nineteenth century, maybe the seventeenth century if you really stretch it.
研究足球周围的气流是麦凯恩课题的一个自然延伸——她和她的学生正在研究粗糙表面对气流的影响，而足球课作为球体的测试模型。
Studying the air flow around soccer balls is a natural extension of McKeon's research, in which she and her colleagues study how surface roughness affects air flow, using spheres as test models.
这个计划是此类计划中最早提出来的,它是正在兴起的叫做受害者研究的自然延伸产物.
The initiative, one of the first of its kind in the U.S., is the natural extension of a burgeoning field of study called victimization research.
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