Translation of "Undertaken" in Japanese

She has undertaken too much work.

彼女は多くの仕事を引き受けすぎている。

Although I broke test tubes and played about with chemicals for fun, I did occasionally manage to obey the teacher's instructions as well; repeating experiments that others had long ago undertaken.

試験管を壊したり、おもしろ半分に化学製品をあれこれいじって遊んだが、時には、教師の指示になんとか従って、ずっと以前に他の人々が試みた実験を繰り返すこともした。