professional是什麼意思：
n. 職業選手；專家，內行
Professional boxing is no bed of roses.
職業拳擊不是一碗好吃的`飯。
He joined the professional circuit.
他參加了職業巡迴賽。
She' s a true professional !
她真不愧爲專家！
Tens of thousands of professional personnel
數以千萬計的專門人才。
Mr. stuart was not a professional astronomer.
斯圖亞特先生並不是專業的天文學家。
bargainer是什麼意思：
n. 買賣約定者，交易者
It was a fabulous bargain.
這是一筆極好的買賣。
They considered the possibility of bargaining with the enemy
他們考慮與敵人談判的可能性。
Make the best of a Bad Bargain
已然吃虧,盡力而爲
Will you keep your side of the bargain?
你那一方能遵守協議嗎？
I snagged a bargain.
我突然碰到一樁好買賣。
