Testes that don 't descend , a condition called " cryptorchidism , " have real problems making sperm .
睾丸不下降,即称为“睾丸症”的情况,确实会有制造精子方面的问题。
Mr borschberg will spend all day climbing as the aircraft 's batteries are recharged and will then descend slowly under power throughout the night , taking care to conserve energy .
Once people descend into that state of dissociation , they then probably experience heightened activity in the association cortices of the brain , such as certain frontal regions and inferior temporal regions , andreasen reported .
He had said afterward that russian air traffic controllers gave his flight 's pilot permission to descend to a low altitude in preparation for landing , contradicting an official investigation by the interstate aviation committee .
I suspect these eddies form in the bowls as saturated air lifted over the summit begins to descend . They 're somewhat analogous to the little pools of rotating water that form behind boulders ( downstream ) in a creek .
Once at mars , several astronauts would descend to the surface on winged spacecraft that landed on skis at the martian polar ice cap .
飞船一着陆,几名宇航员将乘有翼航天器(停在火星极地冰盖上的雪橇上)降到火星表面。
For the submarine to descend to the bottom , it was weighed down with nine tons of iron pellets .
为了潜水艇能够降到底部,他挂着9吨的铁球。
Instead of flying straight , planes must zigzag from one ground beacon to the next , and ascend and descend in steps , at each stage obtaining permission from the ground .
Ideally , your hand would come down in an explosive , bound movement-that is , with accelerating force , ending abruptly and precisely-and your head and shoulders would descend simultaneously , so posture and gesture would be in harmony .