Hpl
胎盘催乳激素
🗣️ 情景例句
She was still beautiful at the age of forty.
她活到四十岁仍然很美。
I'd like to make an appointment with Professor Smith. Would 9:00 tomorrow be all right?
我想和史密斯教授约个会面时间。明天9点行吗？
It must have been about two in the morning when I returned home.
我回到家时，肯定已是凌晨两点左右了。