standard stock的用法和樣例：
例句
- I just got an answer about the stock we have on hand.
我剛剛接獲通知我們現有庫存量。 - The supplier shall use an inventory management system to optimize inventory turns over time, assure stock rotation and minimize inventory levels.
供方必須使用庫存管理系統，以?xún)?yōu)化庫存周轉期，確保貨物周轉并減少庫存量至最低。
