The office air conditioning is so strong that I keep a sweater at my desk.

辦公室冷氣很強，所以我在座位上放了一件毛衣。

Customers can exchange any sweater within thirty days if they keep the original receipt.

顧客只要保留原始收據，任何毛衣都可在三十天內換貨。

Please pack a warm sweater because the conference venue in Hokkaido will be quite cold.

請帶一件保暖的毛衣，因為北海道的會議場地會相當冷。