单词：of a surety
的确, 肯定地
of a surety的用法和样例：
例句
- This is surely too much of a good thing.这的确太过分了。
- I could sense it was a taste of life.我感到这的确是生活的原味。
- It's certain that every effect must have a cause.无疑，每个结果必定有其原因。
- The man who lives by hope will die of hunger.靠希望生活者必定饿死。