延拓的英文：
continuation

And to act as extension to the tunnel when results are required at Mach numbers beyond the tunnel limits.
以及需要在超出风洞马赫数极限的情况下获得试验结果时，用来作为风洞的延拓。

Denseness is not continuity.
稠密性不是连续性。

Land will continue to appreciate.
土地将继续增值。

A merry heart has a continual feast.
一颗愉快的心会享受到接连不断的节日。

The prodigal handouts should continue.
这些慷慨的施舍必须继续下去。

I continued to quiz him.
我继续问他。