Frontopsylla
[医] 额蚤属
🗣️ 情景例句
Do I have to get it done by noon?
我必须在中午以前做完吗？
She gaped in surprise when Robert arrived.
当罗伯特来的时候，她吃惊得长大嘴巴呆住了。
they aroused great interest at the time, they had important theoretical consequences,
这些观察在当时引起了人们极大的兴趣，具有重要的理论意义，