Demand for shipping containers usually slackens after the holiday season ends in January.

貨櫃的運輸需求通常在一月假期結束後趨緩。

Our customer service calls tend to slacken in the late afternoon on Fridays.

我們的客服來電在週五傍晚往往會減少。

The project manager warned the team not to slacken their pace before the deadline.

專案經理提醒團隊在截止日前不要放慢腳步。