【正文】
. without doubt (=undoubtedly)無可置疑地 7. in doubt(=in a condition of uncertainty)對…表示疑惑 8. be due to 是由于 9. e off duty 下班 10. go on duty 上班 11. be on duty 值班, 值日, 在上班時 12. be in duty bound to (do) (=be required by one’s job or esp. by conscience) 有義務(wù)(做 13. be eager for 想得到, 盼望 14. by ear (=play music from memory without having seen it printed) 憑記憶,不看樂譜 15. have an ear for (=have keen recognition of sounds esp. in music and language)對..有鑒賞力 16. a word in one’s ear 私房話, 秘密話 17. on earth 究竟, 到底, 全然 18. with ease ( = easily) 容易,