1.face在該對話中用作動詞,意思是“朝向,面向”
eg. His office faces the garden.
他的辦公室面對著花園。
2.at one's service意思是“聽……吩咐,隨時準備為……效勞”
eg. If you need any help, I and my car are at your service.
如果您需要什么幫助的話,我和我的車隨時為您效勞。
3.free of charge 免費
eg. The department store delivers free of charge.
這家百貨商店免費送貨。
eg. The conversation is encrypted and, while in the network, free of charge.
談話內容經過加密處理,而且在網內是免費的。