Optical altimeter
[机] 光测高度计
🧩 词语组成解析
n. 高度计\\n[化] 测高仪
🗣️ 情景例句
She is giving me piano lessons in exchange for her English classes.
我教她英语，她教我弹钢琴。
I think dimes and quarters will do.
我看1角和2角5分的硬币就可以了。
I want to improve, but I don't know how.
我想提高它，但又不知道怎么样才能提高。