Risus caninus
[医] 痉笑
🧩 词语组成解析
笑, 大笑
[医] 犬齿肌, 尖牙肌(口角提肌)
🗣️ 情景例句
I don't feel right about it.
我觉得这样不对。
I'm twenty-one years old.
我21岁。
Some of the things were hundreds of years old.
展出的一些东西已有数百年的历史了。