Valid function
[计] 有效函数, 有效操作
🧩 词语组成解析
🗣️ 情景例句
Please forgive me, Susan, but...
请原谅我 ，Susan， 但……
Contact me by telephone.
电话跟我联络。
It was as clear as daylight then that burglars had forced an entry during her absence.
事情很清楚，在她外出时，窃贼曾闯进家门。