您要查找的是不是：
- The effluent was detected by mass spectrometry with electrospray ionization （ESI）/atmospheric pressure ionization （APCI） combined ion source and positive and negative scan modes. 質譜檢測採用電噴霧電離/大氣壓化學電離（ESI/APCI）複合離子源,正負離子掃描。
- He has just turned professional. 他剛轉為專業人員。
- He has achieved eminence in his profession. 他在職業上出人頭地。
- Teaching is a demanding profession. 教學工作是個要求很高的工作。
- Perhaps every profession has got its black sheep. 也許每個行業都有害群之馬。
- The answer to my request was in the negative. 對我的請求的答覆是否定的。
- He laddered to the top of his profession. 他躍上他的行業的最高峰。
- This survey is the work of a real professional. 這份調查是真正內行人做的。
- He is a leading member of the medical profession. 他是醫療業中首屈一指的醫生。
- Professional boxing is no bed of roses. 職業拳擊不是一碗好吃的飯。
- She intends to make teaching her profession. 她想以教書為職業。
- His answer to my request was a negative. 我的請求遭到了他的拒絕。
- He is an electrical technician by profession. 他的職業是電工技師。
- The tests for hepatitis were negative. 肝炎檢查結果是陰性。
- Their criticism was not negative. 他們的批評並不是負面的。
- Nursing is a vocation as well as a profession. 護理工作既是職業又是救死扶傷的責任。
- Do a blow-up of this corner of the negative. (對某事的)詳盡的報道。
- The act, practice, or profession of instructing. 授課講授的行為，實踐或職業
- One's regular work or profession. 職業一個人固定的工作或職業
- He plays the flute like a professional. 他吹長笛已達到專業人員的水平。
