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1.传统发信的方法 将信送到邮局(图1、图2); 邮局派专人将信通过飞机或火车或汽车送到收信人所在地的邮局; 邮局再派专人将信通过汽车或人力车送到收信人手里(图3～图6)。 由此可见,一封信的发送要投入多大的力量！
1. The traditional method of sending letters to the post office (Figure 1, Figure 2); post office to send letters through the plane or train or car to the recipient’s post office; the post office to send someone to send a letter through the car or rickshaw To the recipient’s hand (Figure 3 to Figure 6). This shows that the sending of a letter to invest much power!