Plants like this have a big leaf divided into two, and hinged in the middle with long trigger hairs coming off the end.
这种植物有一片大叶子,分成两片,中间有铰链,末端有长长的触发毛。
TED-Ed(视频版)
His landing triggers tiny hairs on the surface of the leaves, and the jaws of the venus fly trap snap shut around him.
他的着陆触发了叶子表面的细小毛发,金星捕蝇器的钳口在他周围合拢。
英语百科
Trichome
Trichomes (/ˈtraɪkoʊmz/ or /ˈtrɪkoʊmz/), from the Greek τρίχωμα (trikhōma) meaning "hair", are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant is an indumentum, and the surface bearing them is said to be pubescent.