Ectomesoderm
外中胚层
🗣️ 情景例句
Hi. This is Robbie Stewart.
你好。我是Robbie Stewart。
I get up before six o'clock every day.
每天我六点前起床。
'I found this outside this gentleman's room,' she said.
“这是我在这位先生的房门外捡到的，”她说。