Aperturing
孔径作用
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
It's cool this afternoon.
今天下午很凉。
He described it as 'a very agreeable situation located within two small hills in the midst of which flowed a great river.
“地理位置十分适宜，位于两座小山的中间，一条大河从中间流过”。