Tributyrin
三丁精, 三丁酸甘油酯
🗣️ 情景例句
Nice to meet you.
很高兴见到你。
For how long?
要借多久？
a ticklish business which is achieved with the aid of two tame elephants roped to the captive on either side.
这是一件棘手的事，需要在它两侧拴上两头驯服的大象才能完成。