The hardware and app are free, but Square takes a small cut of each transaction.
硬件和应用程序是免费的，但Square对每一笔交易收取一点点费用。
Let D be a positive integer with square free.
设d是无平方因子正整数。
Suppose D is a positive integer with square free.
设d是无平方因子正整数。
"Live free, stay in the square," read the graffiti nearby.
附近有个涂鸦的标语：“想获得自由，待在广场上。”
"Live free, stay in the square," read the graffiti nearby.
附近有个涂鸦的标语：“想获得自由，待在广场上。”
应用推荐