Sphingometer
梁和桁 架挠度测定器, 光测挠度计
🗣️ 情景例句
Really, Mr. Marchetta?
真的吗，Marchetta先生？
It is lost labour to sow where there is no soil.
没有土壤，播种也是徒劳。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。