rack steel structure的用法和樣例：
例句
- Upright protectors and column guards safeguard the stability of the structure during fork truck picking and replenishing operations.
支柱防撞護腳及橫樑防護體能保證叉車作業時貨架結構的穩定。 - Unfortunately, it's all too easy to rack up debts on your card account with little to show for the money you've spent.
可惜這太容易了貨架帳戶卡債你很少來證明你的錢花。
