English major should be professional as well as an English teacher.

英语系就该专业，英语老师也是一样。

youdao

She believes that apart from making career plans, graduates should be professional.

她认为毕业生不仅要做好职业规划，更要具备专业素养。

youdao

The notebook should be professional with space for safekeeping of those resumes no crumbled copies, please.

笔记本应该是办公用的，有足够的地方妥善保存你的个人简历(请不要递上皱巴巴的简历。)

youdao

People should ask a health professional about drug combinations that could be harmful.

VOA: special.2009.07.08

The first big question about organising a fire service is how far it should be professional.

ECONOMIST: Firemen: How to run a fire service | The

The caretaker management team and the players should be professional enough to deal with Lincoln City, a side whose run of one win in 11 League Two games has taken them to 90th in the country.

BBC: Fan power sends Megson packing

Employers should not be required to be professional sponsors and participants should not be required to be professional investors.

FORBES: Challenges to 401ks Continue: A Conversation with Fred Barstein, CEO of 401kExchange (February 15, 2008 )