within cryadv.在听得见呼声的地方(在附近)
withinprep.在(某段时间、距离或范围)内;在…里面adv.在…里面n.内部
within the four corners of不越出范围
within-class modular PCA类内分块PCA
within sound of sb's voice在听得到某人声音的地方
Within easy reach of sb.方便,容易达到。
within an ace of ...离 ... 只差一点儿
within-channel signaling路内信令方式