Our mercurial CEO changed the launch date three times in a single week.

我們那位反覆無常的執行長，一週內就改了三次上市日期。

Working with a mercurial client means preparing several backup proposals for every meeting.

跟反覆無常的客戶合作，代表每次開會都得準備好幾份備案。

Shipping costs have been mercurial lately, so we update our quotes every Monday.

最近運費變化無常，所以我們每週一都會更新報價。