Havers' system
[医] 哈弗氏系统(骨小管四周的骨层同心性排列)
🧩 词语组成解析
🗣️ 情景例句
Don't waste your breath trying to persuade them, they'll never listen.
别白费口舌规劝他们，他们不会听你的话。
Pigs may fly,but they are very unlikely birds.
猪儿纵会飞，终究不是鸟。
Can you help me?
你可以帮帮我吗？