Dioptoscopy
[医] 检眼镜屈光检查
🗣️ 情景例句
If you want to go sightseeing, a ferry trip is usually pretty cheap.
如果你想观光，坐船通常是比较便宜的。
Weak men wait for opportunity, but the strong men make it.
若者等待机会，强者创造机会。
Once the existence of this wave-length had been discovered,
一旦这种波长的实际存在被发现，