Geartrain
un. 齿轮系列；传动机构\\n
🗣️ 情景例句
and I stayed out an extra half hour.
我还特别多待了半个小时。
The scenery is beautiful near the Pacific Ocean.
太平洋海洋附近的风景是美丽的。
Is the population of the world still growing?
世界人口仍然在增长吗？