1. with caution

慎重；留心

eg. But he thinks there's already enough reason to swim with caution.

但是，他認為，已經有足夠的理由要求我們游泳要慎重。

eg. This module should be used by system administrators with caution as it provides no real authentication.

系統管理員應該慎用此模塊，因為它并沒有提供實際的驗證。

2. even if

即使；雖然

eg. Even if we cannot slow down every day, at least slow down on Sunday.

即使我們不能每天都慢下來，至少可以在星期天慢下來。

eg. Even if we achieve great success in our work, we should not be conceited.

即使我們在工作中取得了很大的成績， 也不應該自滿。

3. come and go

來來往往，來來去去

eg. You can let her come and go without regarding me. 跟讀

您可以讓她來來去去，不用管我。

eg. Big anniversaries come and go, but moments like this arise only rarely. 跟讀

大型年度慶典來來往往，但像這樣的時刻很出現。