Dalembertian
达兰伯算符
🗣️ 情景例句
Does two o'clock sound alright?
两点钟好吗？
How many sisters and brothers do you have?
你有几个姊妹和兄弟？
That machine joins these different pieces of metal together.
那台机器把这些不同的金属片焊接起来。