🧩 词语组成解析
n. 锯鳐
🗣️ 情景例句
Summer is my favorite season; I love the heat.
夏季是我最喜欢的季节，我喜欢热。
All is not at hand that helps.
有用的东西并不都是垂手可得的。
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？