41.certificate of tank/hold 船舱检验证书
42.China Compulsory Certificate （CCC） 中国强制认证
compulsory必修的义务的；要求的：
a compulsory examination.必要的考试
Employing or exerting compulsion； coercive.强制的使用或施加压力的；强迫的
43.clean bill of lading 清洁提单
bill of lading n.提货单
44.clean credit 光票信用证
credit n.相信；信托；信任
Do you give credit to what the man said？你相信那人讲的话吗？
We bought the furniture on credit.我们赊购了家具。
six months‘ credit六个月的赊帐期限
Her credit is good.她的信用好。
45.clean report of findings 清洁检验报告
finding n.发现（物）， 所见
the finding of a jury陪审团的判决
46.commercial invoice 商业发票
commercial invoice商务发票， 正式签证的贸易发票
commercial adj.商业的， 贸易的
invoice n.发票
A signed invoice presumes receipt of the shipment.经过签收的发货单表示运去货物已收到。
47.contract 合同
sign a contract签订合同
The contract still holds.契约仍然有效。
48.contraindication certificate of vaccination 预防接种禁忌证明
contraindication n禁忌征候
49.credit n. 信用证，
50.customs declaration form 报关单，通关申报表格