The lottery is probably the most popular form of gambling.
彩票可能是最普遍的一种赌博形式。
The police raided a number of illegal gambling dens (= places for illegal gambling ).
警方突击搜查了几个非法赌窟。
n. 赌博;投机
speculation、
gaming
v. 赌博;打赌(gamble的ing形式)
betting