Pmb
[医][=papillomacular bundle]乳头黄斑束
🗣️ 情景例句
I haven't ruled out the possibility.
我还没有排除期可能性。
We intend to place large regular orders, and would therefore like to know what quantity discounts you allow.
我方将定期大量订购，因此想知道你方给多少数量折扣。
There are one hundred thousand million stars in our own Milky Way alone,
仅我们的银河系就有1000亿颗恒星，