Phytolith
n. [古生]植物化石,植物岩
🗣️ 情景例句
OK. What time is it?
好啊。什么时候？
How long have you been studying English?
你学英语多久了？
Grandma is ill, she said. I must take her to hospital.
“奶奶病了，”她说，“我必须送她去医院。