单词：could not but
不得不…
could not but的用法和样例：
例句
- 10000一万
- He could not but look up to the sky and sigh deeply when his lifetime of frustrations passed through his mind.想起自己坎坷的一生，他不由仰天长叹。
- That they were justified in this she could not but admit.她不得不承认，在这件事上他们是有道理的。