Focometry
测焦距术
🗣️ 情景例句
People shouldn't do drugs. They're too addictive.
人们不应吸毒，太容易上瘾了。
Measure thrice before you cut once.
三思而后行。
The film was set in California in the middle of the nineteenth century.
这部影片是以19世纪中叶加利福尼亚为背景的。