Commutants
换位矩阵
🗣️ 情景例句
I heard that you get vitamin D from sunshine, and that you soak it like a sponge.
我听说人们像海绵一样从阳光中摄入维生素D。
To step on
踩到
The whole village has been working day and night gathering and threshing this year's crop before the September rains.
全村的人都日夜奋战，要赶在9月的雨季之前把今年的庄稼收获上来，打完场。