Sphingomyelin
n. [生化](神经)鞘磷脂
🗣️ 情景例句
The signs of the city never fail to impress the foreign tourists.
外国游客无一不对该城市留有深刻的印象。
Not necessarily.
不一定啦！
Before they were replaced by steamships,
在蒸汽船取代帆船之前。