Arctangent
反正切
🗣️ 情景例句
Did you find the sandwich I made for you?
你找到我为你做的三明治了吗？
Changed mind
改变主意
Mrs.Richards realized that it must be the man from the Electricity Board who had come to read the metre.
理查兹夫人这才想到一定是供电局来人查电表了。