- 1. 懷疑的，疑惑的[F][（+about/of）][+wh-] I'm doubtful whether she's still alive. 我懷疑她是否還健在。
- 2. 可疑的，令人生疑的 a doubtful remedy 療效可疑的療法
- 3. 含糊的，不明確的；難以預測的 The future looks very doubtful. 前途看來難以預測。
- 4. （名聲等）不好的
...that building, but they knew the situation was totally hopeless. 2.doubtful At first they were doubtful about recruiting Timothy...
Don't be doubtful! Whenever we are discussing a film or TV program, we...
...隨時隨地都可能會有一個商品交流市場 5.the customer's financial position may be doubtful 消費者的經濟狀況難以預測 6.legal proceedings are costly 合法...