Treponema
n. [微]密螺旋体
🗣️ 情景例句
Amtrak is happy to announce our arrival in New York City.
我们很高兴报告诸位 Amtrak火车就要到达纽约了。
What are you interested in studying?
你对攻读什么感兴趣？
Why don't you attend an aerobic class?
你为什么不去参加一个有氧健身班呢？