The WHO authorized drug manufacturers to begin testing possible vaccines, and the first human trials began a month later.

VOA: standard.2009.12.25

By the way, if we begin by talking about poetic and practical language, we're beginning where the Russian formalists began.

谈到诗化语言和实用语言，我们就和俄国的形式主义者站到了同一个起点。

耶鲁公开课 - 文学理论导论课程节选

"The first thing that we began to do is begin encounters between the Mexican health authorities and the American health authorities in order that they might interchange information regarding the situation in Mexico.

VOA: standard.2009.04.30