Senecio
n. [植]千里光, 狗舌草
🗣️ 情景例句
He has a large family to feed.
他要养活一个大家庭。
Nothing is difficult to a man who wills.
世上无难事，只怕有心人。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）