slack season

基本解释

Winter is the slack season at most hotels.
對大多數旅館來說，鼕天是淡季。
suxuewang.com
Many shops have bargain sale during the slack season.
很多商店在淡季，進行大減價銷售。
bbs.chinadaily.com.cn
Officer: Yes. Right now it's the slack season so we will give you ten percent off.
工作人員：有的，因爲現在是淡季，所以我們給您打九折。

Reasons for the slack demand include perceived high gold prices and a poor monsoon season depressing consumer demand.
FORBES: P.M. Kitco Metals Roundup: Gold Ends Solidly Higher, on Verge of Bullish Upside Technical Breakout
However, the company maintained its full year operating margin guidance for the chipset and licensing divisions, implying that the later half of the year should pick up the slack as handset makers launch high-end smartphones in preparation for the holiday season.
FORBES: Qualcomm Can Dial Up $70 Despite Slower Growth