two-tier的用法和樣例：
詞匯搭配
- two-tier exchange rate 雙重匯率
- two-tier system 兩層架構
- two tier rhombic 雙層菱形天線...
- two-tier price system 兩價制
- two-tier gold price system 雙重金價制
- two tier dipole array 雙層偶極子陣...
- two-tier market 雙層市場
- two-tier gold market 雙重黃金市場...
- two-tier gold price 雙重黃金價格...
- two-tier loan 兩級貸款
- two-tier exchange market [經] 雙重匯率...
