The doctor suspected that he had the flu

怀疑───doubt;流感───influenza

a niggle of doubt───一丝挥之不去的疑虑

I had no doubt that the craven fellow would be only too pleased to back out.───我毫不怀疑那个胆小的家伙巴不得撒手退出呢.

There is good reason to doubt this.───有正当理由怀疑这件事。

No doubt his old mother would now swallow her pride and go and live with Gladys.───无疑，他的老母亲如今只能放下身价，去和格拉迪斯住在一起。

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

Their approach is to whittle away at the evidence to show reasonable doubt.───他们的做法是要削弱证据的说服力以提出合理的质疑。

Judging from his tone, there's no doubt he is against it.───听他的话音,便知他是反对的.

The words hardly permit doubt.───这些话不容置疑.