Immunocontraception
免疫避孕
🗣️ 情景例句
We're on the fifth floor.
我们在五楼。
Have you taken a train?
你坐过火车吗？
The noise had been so faint that no one though that the ship had been damaged.
由于这个声音非常轻，没人会想到船身已遭损坏。