Splining
花键加工
🗣️ 情景例句
What a pity! We have another party that day.
太可惜了，我们那天也有个聚会。
I'm glad to meet you.
我很高兴认识你。
What was the population of the less developed countries in 1950?
1950年不太发达国家的人口是多少？