He rang off before I could explain.
我還沒(méi)來(lái)得及解釋他就掛了。
'Let me explain!' he added helpfully.
“讓我來(lái)說(shuō)明一下！”他熱心地補(bǔ)充道。
Please don't get cross. Let me explain.
請(qǐng)別發(fā)火，讓我來(lái)解釋一下。
How can I explain if you keep butting in?
你一直插嘴，我還怎么解釋?zhuān)?/p>
Let me explain why.
讓我來(lái)解釋為什么。