It expels gas to descend, and expels water from trim bladders to rise.
它通过排出气体来下降，并通过把水排出气囊来上升。
We're not going to descend to such methods.
我们不会堕落到使用这些方式的份上。
With a thin scream, like a tea-kettle whistle, the medusa starts to descend.
随着一声像茶壶煮开了水那样的微弱的叫声，水母开始下降。
When the water level was high, the user needed only to descend a few steps to reach it; when it was low, several levels would have to be negotiated.
当水位高的时候，使用者只需要往下走几个台阶就能到达井的部位；当水位低的时候，就要走好几层了。
And he tells him to descend from the mountain.
然后让他下了山。
Something frightful was about to descend on him.
可怕的灾祸就要降临到他头上了。
I didn't expect him to descend to personal abuse.
我没料到他会堕落到对我进行人身攻击的地步。
It took us two hours to descend, feebly assisted by the rope.
靠条绳子的帮助，我们花了两个小时下山。
Peter used the service stairway to descend the two flights .
彼得从职工专用楼梯走下两层楼梯。
Soon afterwards, the balloon began to descend and it landed near an airfield.
不久，这个热气球开始降落，在一个停机坪附近着了陆。
Soon afterwards, the balloon began to descend and it landed near an airfield.
过了一会儿，气球开始降落，并且在一个机场附近着陆了。
Soon afterwards, the balloon began to descend and it landed near an airfield.
不久，气球开始降落，在一个停机坪附近着了陆。
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。
At the end of this march I came to an opening, where the country seemed to descend to the west.
我走到尽头的时候，忽然走到一片开阔的地方，那里的地势仿佛向西低下去。
What she wanted was for Dr Allsop himself to descend on her, very like a knight on a white horse.
她实际上需要艾尔索普大夫如同一位骑着白马的骑士一般降到她的身旁。
That in turn cools the air above the surface of the sea, allowing more cool dry air to descend from above.
紧接着，这会降低海平面至上大气的温度，使得更多低温干燥的空气降落到表面。
Jaime was about to command Ser Kennos to sound the Horn of Herrock when the drawbridge began to descend.
詹姆正打算命令肯洛斯爵士奏响赫洛克之号，吊桥就开始慢慢放下。
"How canst thou dare," said she with angry look, "to descend into my garden and steal my rampion like a thief?"
“你好大的胆子，”她怒气冲冲地说，“竟敢溜进我的园子来，像个贼一样偷我的莴苣！”
In future, astronauts will be required to descend from a spaceship while it is still in space and return to it.
将来，宇航员应当能从依然在太空中的宇宙飞船中下来，并且能够回到飞船里去。
As she never offered to descend to breakfast next morning, I went to ask whether she would have some carried up.
她关紧了门，把我挡住了。第二天早上她既然没有说起要下楼吃早餐，我就去问她要不要我送点心上楼。
We need to descend through one more layer of abstraction before we turn our attention back to more practical matters.
在我们将我们的注意力回过来在更多的实际问题中，我们需要降低更多提取的层次。
The bike has no chains or gears, making hills extremely difficult to climb and dangerous to descend due to its small brake.
这辆车没有链子，也没有排档，因为它的刹车闸很小，所以骑着它爬山非常困难，而下坡又异常危险。
Just as the colonel's curtain of fear had begun to descend once again, the promise of international protection will hoist it back up.
正当上校的恐怖之幕开始再次落下之际，国际社会的承诺将其一把掀开。
In order to descend recursively and with ease through XML nodes, I utilized the high-level Pythonic interface provided by xml_objectify.
为了轻松地循环下降遍历xml节点，我利用了xml_objectify提供的高级python化的接口。
My experienced companion, nicknamed "Octopus", was the first to descend and it wasn't long before his red uniform disappeared from view.
我的经验丰富的同伴，绰号“Octopus”，是第一个向下攀爬的人，没过多久，他的红色制服就从视野里消失了。
Thousands of racegoers were preparing to descend on Melbourne for the Victorian spring racing carnival, one of Australia's biggest social outings.
数千名赛马迷准备赶往墨尔本参加维多利亚春季赛马狂欢节，这是一项澳大利亚最大型的户外社交活动。
Thousands of racegoers were preparing to descend on Melbourne for the Victorian spring racing carnival, one of Australia's biggest social outings.
数千名赛马迷准备赶往墨尔本参加维多利亚春季赛马狂欢节，这是一项澳大利亚最大型的户外社交活动。
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