Competition among online retailers has intensified, so we must lower our shipping fees.

線上零售商之間的競爭加劇，所以我們必須調降運費。

Management decided to intensify recruiting efforts after two senior engineers resigned last month.

兩位資深工程師上個月離職後，管理階層決定加強招募力道。

Customer complaints intensified when the new billing system started charging accounts twice.

新的帳務系統開始重複扣款後，客戶抱怨愈演愈烈。