a tough proposition
[口]难处理的事[人], 一件棘手的事
热门单词
- abase oneself
- aborticide
- abr.
- absolute amplification
- absolute detector response
- absolute pressure regulator
- absolute program loader
- absorption brake
- absorption precipitant
- accelerated testing cabinet
- accepted scale
- access opening
- accidentalism
- accounting for a pooling
- accrual basis
- acetylcellulose
- acetylizer
- acetylphosphatase
- achoricine
- acicular leaf
- acid Bessemer converter
