Volunteers wore human dentin samples in their mouths , and tested different brushing regimens .
在志愿者口中放置人牙质样本,研究人员测试了不同的刷牙方案。
Much of the danger comes from the mouths , noses and hands of passengers sitting nearby .
很大一部分传染风险来自邻座乘客的口、鼻和手。
Wei also has retrieved bodies with gagged mouths and bound hands , the hallmark of criminal gangs and corrupt police .
魏还捞到过双手被绑、口被堵住的尸体犯罪团伙作案的典型标志。
Other scientists still think that first step happened at the mouths of so-called hydrothermal vents , at the bottom of the sea .
其他科学家们仍然第一步发生在被称为热液口中,它位于大海的底部。
His parents decided that , with four mouths to feed and a son to educate , they would open a restaurant .
为了养活一家四口,并供儿子上学,他们决定开一家餐馆。
Colt continued to refine his initial design , obtaining patents on such components as a cylinder-locking mechanism , fluted cylinders , longer grips and beveled-cylinder mouths to eliminate igniting adjacent chambers .
In addition to stealing food out of the mouths of the global poor , funneling crops through chickens , pigs , and other animals so that we can eat their flesh and eggs or drink their milk doesn 't make sense in a world where resources are becoming more and more expensive .
His name appears as writer or co-writer of nearly every single episode of the series , and like aaron sorkin or david milch , kelley has a viewpoint you can hear from the mouths of the characters he created .
Over the years , I have talked to black-faced miners at the mouths of illegal pits , descended deep down the shafts of huge state-run collieries , consulted labor activists , and interviewed mine owners and policymakers .