Over is also an adverb.
越过 • ...planes flying over every 10 or 15 minutes. …每隔10或15分钟飞越上空的飞机。
If one thing is over another thing, it is supported by it and its ends are hanging down on each side of it.
(搭或挂) 在…上
If you look over or talk over an object, you look or talk across the top of it.
越过…上方 • I went and stood beside him, looking over his shoulder. 我走过去站在他身旁,从他的肩头上方望了过去。
If an activity is over or all over, it is completely finished.
结束的 • Warplanes that have landed there will be kept until the war is over. 已经着陆在那里的军用飞机将被留到战争结束。
记忆小技巧: 遇到不认识的 over- 单词,先拆分。例如 overload,over (过度) + load (负荷) = 超载。这种方法能帮你快速理解大部分合成词的意思。