随着海洋变暖，一种被称为南极极锋的水体正被逐步推向南方；南极极锋是一种富含营养的海洋向上运动，它支持着大量海洋生物的生存。
As the ocean warms, a body of water called the Antarctic Polar Front—an upward movement of nutrient-rich sea that supports a huge abundance of marine life—is being pushed further south.
用鸟谷部博士的楼梯的比喻来看，小球就这样产生了一种单向上行的运动。
The ball was thus on a one-way trip up, to use Dr Toyabe’s analogy, the staircase.
跳，跃：以一种很快的动作或一系列的动作作向上或前进运动；跳跃。
To move upward or forward in a single quick motion or a series of such motions; leap.
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