Roughmeter
粗糙度计; 粗糙度仪
🗣️ 情景例句
You really ought to take some time off.
的确应该休一休假。
Advanced technology has enriched China.
先进的工业技术使中国富裕起来。
Late in the afternoon, the boys put up their tent in the middle of a field.
傍晚时分，孩子们在田野中央搭起了帐篷。