重點講解：
1. a fleet of
（尤指同一機構或統一行動的）車隊；
eg. The company owns a fleet of car for its sale force to use.
這家公司擁有一個車隊，供從事推銷的雇員使用1*y.hWxhv%+7SSfk&l。
eg. A fleet of ambulances took the injured to hospital.
一隊救護車把傷者送往醫院iiRq6eH%q9i@[lIQ。
2. two-way
雙行的；雙向的；
eg. Use two-way conversation to find and recruit top talent from within.
運用雙向對話從公司內部發掘提拔優秀人才3|HK9m[ZgKouWxy。
eg. This reflects a two-way causality.
這反映出一種雙向因果關系|9+%Ca!@-ntOd,A~+=。
3. a pair of
雙；對；副；
eg. 72,000 pairs of hands clapped in unison to the song.
72，000雙手和著歌曲整齊劃一地打著拍子)T+]zvPUnjA5UE。
eg. On the mantelpiece are a pair of bronze Ming vases.
壁爐臺上是一對明代的青銅花瓶-Bs(L|_8cDqSN。