Parametrix
拟基本解奇异函数
🗣️ 情景例句
A large number of American radio stations operate in the red.
许多美国电台亏损经营。
A good head and an industrious hand are worth gold in any land.
聪明脑袋勤劳手，走遍天下贵如金。
I must always keep on trying to do my best.
我必须始终继续作出最大的努力。