1. Because of her inherent carelessness, I doubt my sister can ever be a good driver.
    由于天生的粗心大意，我怀疑妹妹无法成为一位好驾驶员。

2. By now optimism had given way to doubt.
    至此，人们不再乐观，反而疑虑重重。

3. Fear, uncertainty and doubt —
    -- FUD 指的是恐惧、犹豫和怀疑

4. With practice, no doubt, I could in time learn to write by holding the pen still while the paper moved.
    毫无疑问，经过练习，我最终能够学会笔不动而纸动来写字。

5. We might say that justice has been done when a man´s innocence or guilt has been proved beyond doubt.
    当某人被证据确凿地证明无罪的时候，我们也许会说正义得到了伸张。

6. There is no doubt about his innocence.
    他完全是无辜的。

7. There is no doubt that if she had not lost her rudder she would have won the race easily.
    如果它没有失去舵，无疑它会轻而易举地赢得这次比赛。

8. The guilt of the accused man was in doubt.
    被告之罪有疑问。

9. There is no doubt that if she had not lost her rudder she would have won the race easily.
    毫无疑问，如果中途没有失去舵， "卡帝萨克"号肯定能在比赛中轻易夺冠。

10. There was no doubt that we were unwelcome visitors.
    毫无疑问，我们的来访是不受欢迎的。