A standard one. Replacement during the first year if all rules for proper use have been followed.
有一个原则,如果在一年内符合各种使用规定,就可更换。
If we go downhill, we might find a stream, and if we follow the stream we should reach a farm, or a village or a bridge.
“如果我们走下山,我们可能会发现一条小溪,如果我们沿着小溪走,我们会到达一个农场或一个村庄或是一座桥。”