be sure of

漢語翻譯

確信..., 肯定..., 對...有把握

例句：

1. Can I be sure of a profit if I invest?
   我要是投資，肯定能獲利嗎?
2. Book early if you want to be sure of a seat.
   要想十拿九穩有個座位，那就早訂座。
3. I left a message so as to be sure of contacting her.
   我留下了張條子以便與她取得聯繫。
4. He likes to be sure of his bodily comforts.
   他注重身體上的舒適。