英語翻譯：

alone; but; only; thought

例句：

1. 殉教行為，是無德無能者可以一舉成名的惟一途徑。
   Martyrdom is the only way in which a man can become famous without ability.
2. 惟有年輕時死去的人才是好人。
   Only the young die good.
3. 我惟有知道你平安無事才能放心。
   I'll only relax when I know you're safe.