1.account for 說明
How do you account for the company's alarmingly high staff turnover?
你怎么解釋這家公司高得令人憂慮的人員流動率?
2.to the edge of 邊緣
The children lead me through the maze of alleys to the edge of the city.
孩子們領我穿過迷宮一般的街巷,來到城邊
。3.secret service 情報機關
Secret Service officer Robin Thompson spoke on behalf of his colleagues.
特工處官員羅賓·湯普森代表他的同僚發表了講話
。