With neither engine working, Voyager quickly began to lose speed and height.
由于没有引擎在工作,“航行者”迅速开始失去速度和高度。
To move what he calls the elevators in the tail. You'll lose speed, but keep altitude.
如果扳动机尾处的升降舵,就会减速,但能保持住高度。
In some cases, it is perfectly acceptable to assume a flat model of the Earth and lose some accuracy in exchange for speed.
在一些情况下,完全可以采用平面地球模型,通过牺牲一些精确性来获取速度。
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