loop

环, 圈, 弯曲部分, 循环

anything with a round or oval shape (formed by a curve that is closed and does not intersect itself); an inner circle of advisors (especially under President Reagan); the basic pattern of the human fingerprint; a computer program that performs a series of instructions repeatedly until some specified condition is satisfied

使成环, 以圈结, 以环连结

打环, 翻筋斗