Geoplane
激光扫平仪
🗣️ 情景例句
Carnegie Hall, Lincoln Center.
卡奈基音乐厅， 林肯中心。
A bit in the morning is better than nothing all day.
略有胜于全无。
a wave length (the horizontal distance between two wave crests),
波长（两个浪峰间的水平距离）