Evenometer
光电式均匀度测定仪
🗣️ 情景例句
Look before you leap.
想好了再行动。
Has everybody got a sheet?
每个人都拿到材料了吗？
A great many former pupils will be attending a farewell dinner in his honour next Thursday.
很多老同学都准备参加下星期四为他举行的告别宴会。