In seeking to describe the origins of theater, one must rely primarily on speculation, since there is little concrete evidence on which to draw.

在试图描述戏剧的起源时，人们必须主要依靠推测，因为几乎没有具体的证据可以引证。

youdao

We must rely on the honesty and good faith of others.

我们必须信赖他人的诚实和善意。

youdao

Such moves may eliminate the fears of those living in the exporting countries, but they are creating panic in importing countries that must rely on what is then left for export.

这些举措可能会消除那些生活在出口国的人的恐惧，但它们正引起进口国的恐慌，因为这些国家必须依赖剩下的出口物资。

youdao

France and Germany said Tuesday that the G-20 summit must produce stricter financial market regulation and should not rely so heavily on stimulus spending and taxpayer bailouts.

VOA: standard.2009.03.25

If not, then the President must rely on some statutory authority granted by Congress.

FORBES: Alleged White House Leaks

For that, it must rely on cache but cache has the same memory-loss problems as DRAM.

FORBES: Total Recall

To boost profits, the banks must rely at least in part on retail and small-business customers.

ECONOMIST: Swallow hard