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を
1. indicates direct object of action
2. indicates subject of causative expression
3. indicates an area traversed
4. indicates time (period) over which action takes place
5. indicates point of departure or separation of action
6. indicates object of d...
表示动作的直接对象；表示经过的场所；表示离开或分开的点
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下ろす， 降ろす， 下す， おろす
1. to take down, to bring down, to lower (a hand, flag, shutter, etc.), to drop (an anchor, curtain, etc.), to let down (hair), to launch (a boat)
2. to drop off (a passenger), to let off, to unload (goods, a truck, etc.), to offload, to discharge
3....
取下，使倒下，放下(手、旗帜、百叶窗等)，降下(锚、窗帘等)，放下(头发)，让(船只)下水；让(乘客)下车、释放、卸下(货物、卡车等)、卸载、排放；取出(钱)
から
1. from (e.g. time, place, numerical quantity), since
2. from (originator), by
3. because, since
4. out of (constituent, part)
5. through (e.g. window, vestibule)
6. after, since
7. expresses sympathy or warning
从，自……；因为；被，用于……