請高手翻譯

While stock lasts
means數量有限, 送完即止, 換完即止, 售完即止
Each =每件
Each xxx can exchange xxxx 凡購買xxx, 就可換購 xxx
Limits one version only 只限同款

數量有限/Limited Supplies/Limited Goods
送完即止/While Supplies Last換完即止/While Supplies Last
售完即止/While Supplies Last
只限同款/Limited to One Style Only
每件/Each Piece/Each Item
凡購買/When You Purchase/When You Buy
換購/Exchange Token

數量有限：The stock is limited.

送完即止：Once the gifts are all sent out, you will lose everything.

換完即止：Once the exchange is over, you will lose everything.

售完即止：Once the goods are sold out, you will lose everything.

只限同款：Same kind only.

每件：Each piece of / Each

凡購買：When you buy......

換購：exchange