英语释义
1. an alternating up-and-down or backward-and-forward motion or movement also a contest or struggle in which now one side now the other has the lead
2. a pastime in which two children or groups of children ride on opposite ends of a plank balanced in the middle so that one end goes up as the other goes down
3. the plank or apparatus so used
4. to move backward and forward or up and down
5. to play at seesaw
6. alternate
seesaw between two activities
7. to cause to move in seesaw fashion
8. a long, flat board that is balanced in the middle so that when one end goes up the other end goes down
9. a situation in which something keeps changing from one state to another and back again
10. to keep changing from one state or condition to another and then back again
11. a plank for children to play on that is balanced in the middle on a raised bar with one end going up while the other goes down
12. to keep changing from one state to another and back again