Tph
[医][=tissue ph]组织ph值
🗣️ 情景例句
I don't know how to drive I'm afraid.
恐怕我不懂得怎样开车。
When Greek meets Greek, then comes the bug of war.
两雄相争，难解难分。
When did they live there?
他们什么时候住在那儿？