氢激活的英文：
hydrogen activation

hydrogenated shortening
氢化酥油

Hydrogen has no colour no taste and no smell.
氢气无色、无味、无嗅。

Water is composed of hydrogen and oxygen.
水是由氢氧组成的。

Water contains hydrogen and oxygen.
水含有氢和氧。

Hydrogen and oxygen are gases.
氢和氧是气体。

She is an active participant in this activity.
她积极参与这项活动。

They are union actives.
他们是工会积极分子。

contamination activity
污染放射性

He took an active part in the extracurricular activities in the school.
他积极参加学校的课外活动。

The students take an active part in the school activities.
同学们都积极参加学校组织的各项活动。