我负有确保这些包裹得到妥善保管的重大责任。I had a huge responsibility to ensure these packets remained in safe hands.你没权挥霍委托你保管的钱.You have no right to play ducks and drakes with money that has been entrusted to you.它们列于一卷严格保管的缩微胶卷上.They are ...
Total concentration is required with no distractions.要全神贯注，不能有丝毫分神。There are too many distractions here to work properly.这里叫人分心的事太多,使人无法好好工作.I find it hard to work at home because there are too many distractions.我发觉在家里工作...
The main property changes occurring during dehydrochlorination are: hydrogen chloride evolution , coloration, and embrottlement.脱氯化氢降解过程中的主要性能变化是: 释出氯化氢, 变色和变脆.This paper summarized classification, functions, varieties o...