-----------------------------------
とんぼ返り， トンボ返り， 蜻蛉返り， トンボ帰り， とんぼ帰り， とんぼがえり
1. somersault
2. returning from a destination right after arriving there, non-stop round trip, round trip without an overnight stop
3. abrupt change of direction
tbd
-----------------------------------
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
する， 為る
1. to do, to carry out, to perform
2. to cause to become, to make (into), to turn (into)
3. to serve as, to act as, to work as
4. to wear (clothes, a facial expression, etc.)
5. to judge as being, to view as being, to think of as, to treat as, to use...
做，作，干，执行