Petzval theory
[医] 珀兹伐氏学说(镜片像散现象)
🧩 词语组成解析
佩兹伐
🗣️ 情景例句
But who's going to pay for all of this?
但谁来为这些付钱呢？
No sweet without some sweat.
不劳则无获。
No, it's too small. Let's go to the farthest instead. It's more interesting.
不，那个太小了。还是去最远的那个吧。那更有趣！