explain/ɪksˈpleɪn/
vt., vi.1. 说明；阐明Explain what this word means.解释词的含义。
Will you please explain the third paragraph again for us?请您把第三段给我们再解释一下好吗？
2. 解释；辩解Can you explain why you were late?你能解释一下你为什么迟到吗？
The price tag says $100 and you charged me for $120; how do you explain the discrepancy?货物标签上写的是一百美元，你向我索价一百二十美元，这个差异该怎么解释？