Sphingometer
梁和桁 架挠度测定器, 光测挠度计
🗣️ 情景例句
She worried constantly.
她经常烦恼。
I get out of bed about 7 o'clock every morning.
我大约每天早上7点钟起床。
'I am a foreigner,' I said.
“我是个外国人，”我说。