他的第一份工作是一名临时助理研究员，第二份工作是在一位教授服两个月兵役期间临时顶替其工作。

His first job was as a temporary research assistant, the second as temporary replacement for a professor who had to serve a two-month term in the army.

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在首都810名以英语为母语的教学助理中，仅有303名，或者37.4%的人，持有tesol(教授英语作为第二语言)证书。

Among 810 native English-speakers who teach as assistants in the capital city, only 303, or 37.4 percent, hold certificates for Teaching English to speakers of Other Languages (TESOL).

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