Britain's trade figures can no longer be extracted from export-and-import documentation at ports.
英国的贸易数字再也不能从各港口的进出口文件中摘取了。
《柯林斯英汉双解大词典》
2
A subscription book is the documentation subscribed by the parties of commercial house business when they sign trade contract or pre-contract, it validates the matters of house business.