Microcrazing
显微裂纹
🗣️ 情景例句
It's about the size of the United States, but it has a population of only 16.5 million.
它和美国一般大，但人口却只有一千六百五十万。
How long have you been studying English?
你学了多长时间的英语了？
I'm thinking.
我在思考。