Mesopterygium
（中鳍骨）中鳍软骨
🗣️ 情景例句
There is nothing better than a hot dog in the country.
在美国没有比热狗更好的东西了。
A proper amount of exercise contributes to good health.
适度的运动有益于健康。
Gandhi won his first non-violent struggle against racial discrimination.
甘地赢得了第一次反种族歧视的非暴力斗争的胜利。