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. 质谱检测采用电喷雾电离/大气压化学电离（ESI/APCI）复合离子源,正负离子扫描。
- He has just turned professional. 他刚转为专业人员。
- He has achieved eminence in his profession. 他在职业上出人头地。
- Teaching is a demanding profession. 教学工作是个要求很高的工作。
- Perhaps every profession has got its black sheep. 也许每个行业都有害群之马。
- The answer to my request was in the negative. 对我的请求的答复是否定的。
- He laddered to the top of his profession. 他跃上他的行业的最高峰。
- This survey is the work of a real professional. 这份调查是真正内行人做的。
- He is a leading member of the medical profession. 他是医疗业中首屈一指的医生。
- Professional boxing is no bed of roses. 职业拳击不是一碗好吃的饭。
- She intends to make teaching her profession. 她想以教书为职业。
- His answer to my request was a negative. 我的请求遭到了他的拒绝。
- He is an electrical technician by profession. 他的职业是电工技师。
- The tests for hepatitis were negative. 肝炎检查结果是阴性。
- Their criticism was not negative. 他们的批评并不是负面的。
- Nursing is a vocation as well as a profession. 护理工作既是职业又是救死扶伤的责任。
- Do a blow-up of this corner of the negative. (对某事的)详尽的报道。
- The act, practice, or profession of instructing. 授课讲授的行为，实践或职业
- One's regular work or profession. 职业一个人固定的工作或职业
- He plays the flute like a professional. 他吹长笛已达到专业人员的水平。
