Umbilical ducts
[医] 脐管, 卵黄管, 卵黄柄
🧩 词语组成解析
a. 脐带的, 脐的, 近脐的, 关系密切的\\n[医] 脐的
n. 通风管道；管道（duct的复数）
🗣️ 情景例句
I'm in the best shape of my life.
我现在身体很好。
He who never was sick dies the first.
小病不生，一病致命。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后记录下的是横向波的到达，横向波比纵向波传播得慢，在纵向波到达几分钟后才能到达。