他小心翼翼地站在边缘。He was cautious of his footing, wary of the edge.在边缘附近只能小功率发射 ( 不要在频带外发射! )Tx is only miliwatts near the edges ( DONT TX OUT OF BAND! ).我真处在将关闭的在边缘上.I really was on the edge and about to close....

“在边缘”的英语可以翻译为：on the edge of ...