... 正式信函 formal letters 正式保证formal guarantee 安慰信 comfort letter; letter of comfort ...
双语例句
1
Toset forth principles of behavior in formal documents is hardly to guarantee their observance.
正式文件中所提出的行为准则,并不能保证它们得到遵守。
2
As a XML-based descriptive language, WS-CDL lacks a formal model and verification mechanism to guarantee the correctness of collaborations and interactions.