✔ 最佳答案
(1)
see-saw noun, verb
noun
1 (NAmE also teeter-totter) [C] a piece of equipment for children to play on consisting of a long flat piece of wood that is supported in the middle. A child sits at each end and makes the see-saw move up and down: Can we go on the see-saw?
teeter-totter noun (NAmE) = see-saw
(2)
diver /dav(r)/ noun
1 a person who works underwater, usually with special equipment: a deep-sea diver—compare frogman
2 a person who jumps into the water with their head first and their arms in front of them
(3)
pop•corn /ppkn; NAmE ppkrn/ noun [U] a type of food made from grains of maize (corn) that are heated until they burst, forming light whitish balls that are then covered with salt or sugar