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However, the key technology of vascularization hasn't been solved ideally yet.

然而，大块组织工程骨血管化等关键性技术难题至今未找到理想的解决办法。

The exterior of root system of alfalfa in adult period hasn't velamen. The polysaccharide in the interior of root system lies in partial secondary phloem and xylem ray of secondary xylem, which doesn't distribute uniformity.

这与苜蓿有差别，苜蓿成株根系外侧没有"根被"，且根系内部多糖存在于部分次生韧皮部和次生木质部的木质射线中，分布不均匀。

Acupuncture combined with ventouse and venesection hasn't any obvious adverse side effects, so it's better than minocycline in the treatment of Acne conglobata.

3针灸调节机体免疫功能可能是其治疗聚合性痤疮的重要机理之一。

He's a really nice guy and he hasn't changed at all since then , explains the Venezuelan.

他是个非常好的人而且从那之后也一直没有变过。

Venter hasn't done that yet, which is why even he won't say that he has technically invented life.

Venter还没有那么做，这就是即便他也不愿称自己从严格意义上讲造出了生命。

Mount Vesuvius hasn't erupted for many years.

维苏威火山已多年没爆发了。

Vinson says he can't explain why the link between anger and injury is more evident in men or why anger hasn't been associated with traffic accidents.

Vinson说，他无法解释愤怒与受伤之间的联系为什么在男人身上更明显，或者愤怒为什么一直与交通事故无关。

I guess Liu Ding hasn't made the vitrine easy to open though so maybe it's only good for looking at.

我猜想也许刘鼎会把他的柜子做得不容易打开，只能被观看。

A beautiful, auburn-haired woman with the energetic yet graceful movements of an athlete, she hasn't a trace about her of the hefty Wagnerian matron of operatic cliché.

一位精力充沛、体态优雅的赤褐色发女性--她的样子一点也不像歌剧中典型的体型发达的瓦格尔式主妇的样子。

He hasn't waken up to the seriousness of the situation.

他还没有意识到情况的严重性。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"