irradiate
UK/i'reidieit/US
TOEFLGREC2
释义
v.
To expose something to radiation (e.g. to sterilise food or treat tissue)
照射、辐照（如杀菌、医疗处理）
v.
To light up; to shine light onto
照亮、使发光
词根拆分
词根派生这里的 ir- 是 in-「向内/朝……」的变体（不是表否定）。ir-（朝……）+ radi（光线）+ -ate（动词）=「向某物投射光线」。字面是把光照在某物上；现代专业用法指用射线照射——irradiated food 是经射线处理以杀菌的食品。
词根 radi 还连着 9 个词例句
- 1.
The spices are irradiated to kill bacteria before they are packaged.
这些香料在包装前经过辐照处理以杀灭细菌。
- 2.
Morning light irradiated the dusty attic through a single window.
晨光透过唯一的窗户照亮了积满灰尘的阁楼。