Phytosphingosine
植物鞘氨醇, 4-羟双氢(神经)鞘氨醇
🗣️ 情景例句
I would like a haircut, please.
麻烦你，我想理发。
You'll regret it if you don't go.
不去你会后悔。
Oh dear! You're right.It's closed.
哎吆！你说得对，是关着的。