距离保护的原理:改错(每句一处错):What's the name for the machine?

改错(每句一处错):What's the name for the machine? 改错(每句有一处错):1.Jim's sister can swim,what about he? 改错(每句一处错):What day it is tomorrow? 改错(每句有一处错):Let's go play games. 改错(每句一处错):I can't write and draw what's means? what's this what's SDA What's wrong? What's wrong