unlikely

形容词 unlikely:

1. not likely to be true or to occur or to have occurred
   同义词：improbable
2. has little chance of being the case or coming about
3. having a probability too low to inspire belief
   同义词：improbable, unbelievable, unconvincing

1. Frost is possible, although unlikely, at this time of year.
   在一年中的这个时候，下霜也是可能的，虽然可能性并不大。
2. On the evidence of their recent matches it's unlikely the Spanish team will win the cup.
   从西班牙队最近的比赛情况来看，他们难以在这一锦标赛中夺标。
3. He is very ill and unlikely to recover.
   他病得非常厉害，不大可能恢复健康了。
4. These tactics are unlikely to be helpful to you.
   这种方法对你未必有用。