P.-p. substance
[医] 糙皮病预防物质
🧩 词语组成解析
🗣️ 情景例句
Why is that necessary?
为什么有此必要
Where is gate six?
6号登机门在哪儿？
Can you find her purse? If she's gone somewhere she will have taken it.
你能找到她的钱包吗？如果她去什么地方她会带着它的。