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
we can ship the goods one month ahead of time.
我们可以提前一个月起运。
Excuse me, how can I get to the bus station?
对不起，汽车站怎么走？
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。