401. One indisputable fact is that..., and this trend is expected to continue into the future. There are two main reasons for this phenomenon.
一個不容置疑的事實是……，這一趨勢還將延續(xù)到未來。導(dǎo)致這一現(xiàn)象的主要原因有兩點。

六級詞匯講解:
該句可作為分析原因或現(xiàn)象的議論文的第一段。第一句中的one indisputable fact is that...通常用在第一段或主體段的段首，其后接表語從句，以引出一種事實或現(xiàn)象。indisputable意為“無可爭辯的，不容置疑的”。be expected to意為“被期望做某事”，含有“在意料之內(nèi)”的意思。在指出了全文的中心之后，最好明確交代下文中所分析的原因的數(shù)量，如上句中的There are two main reasons for this phenomenon.

句型拓展:
The indisputable fact is that you were late for the meeting yesterday.
不容置疑的是，你昨天開會遲到了。
It is an indisputable fact that second-hand smoke is harmful for everyone.
無可爭議的是，二手煙對每個人都有害。
No one can deny the fact that the new policy took effect in the short run.
無可否認(rèn)的是，從短期看來，新政策起效了。