vi.

1. 赌博；打赌[（+on）]
   He gambled heavily on the horses.

   他在赛马上大下赌注。

2. 投机；冒险[（+on/with）]
   He gambles on the stock exchange.

   他从事股票投机。

vt.

1. 赌掉，输光[（+away）]
   He gambled away all his money.

   他把钱全都输光。

2. 以……为赌注；把……孤注一掷[（+on）]
   The company gambled all on the new product.

   公司将全部赌注都押在新产品上。

3. 冒险假设[Y][+that]

n.

1. 赌博；打赌[C]
2. 冒险；无把握的事[S]
   This is a gamble we have to take.

   这是我们不得不冒的风险。

v.

1. play games of chance for money; bet.
   ▸bet (a sum of money).
2. take risky action in the hope of a desired result.

n.

1. an act of gambling.
2. a risky undertaking or enterprise.