职业或爱好

- The company decided to take up renewable energy as a new business line.

公司决定将可再生能源作为新业务领域。 - Since childhood, she has taken up painting as a hobby.

自幼年起，她一直以绘画为爱好。

活动或任务

- They took up gardening after moving to the countryside.

他们搬家后开始从事园艺活动。 - The project took up more time than expected.

该项目占用了比预期更多的时间。

状态变化

- After losing his job, he took up teaching as a temporary measure.

失业后，他暂时从事教学工作。 - The company took up a new policy to reduce carbon emissions.

公司采取了新政策以减少碳排放。

这些例句展示了“take up”在不同语境中表达“开始从事”的用法，涵盖职业、爱好、活动及状态变化等场景。