n. a serve that strikes the net before falling into the receiver's court; the ball must be served again
v. make it possible through a specific action or lack of action for something to happen
v. actively cause something to happen
v. leave unchanged
vt. 让, 假设, 出租, 排放, 妨碍
vi. 出租, 被承包
n. 出租屋, 障碍