31. We usually accept payment by irrevocable letter of credit payable¹ against shipping² documents.我们通常只接受不可撤销的信用证，凭装运单据付款。

　　32. Traveler‘s check need countersigning³.旅行支票要复签。

　　33. The appearance of a package that catches the eye will certainly be of much help in promoting the sales.外观引人注目的包装肯定大大有利于促销。

　　34. Each is lined with waterproof⁴ paper， so that it can‘t be spoiled by dampness or rain.每个纸箱都有内衬防水纸，因而不会被潮湿和雨水侵蚀。

　　35. I think the inner packing is good enough. And what about the outer packing？我认为内包装还行。那么外包装怎么样？

　　36. Solid packing and overall stuffing can prevent the cases from vibration⁵ and jarring.坚固的木箱和箱内严密的填充可防止木箱受震、开裂。

　　37. We want deliveries on time， not excuses我们需要的是按时交货，而不是借口。

　　38. I apologize for the late delivery， but the carrying vessel⁶ had an accident.对于货物的迟交我深表歉意，原因在于运输船舶出了事故。

　　39. Did you get the bill of lading for you last shipment？你们收到前一批货的提货单了没有？

　　40. Your quotation⁷ is on C.I.F. basis. What risks are you usually covered against？你报的是到岸价，那么通常情况下你方对什么风险进行投保？