I can't reach the top shelf.

我够不着最上面的架子。

《柯林斯英汉双解大词典》

The tree is so high that I can't reach the apples on it.

这棵树太高了，我够不着它上面的苹果。

youdao

Gharib has already been contacted by a civil engineer in Nicaragua, who wants to put up buildings with adobe roofs supported by concrete arches on a site that heavy equipment can't reach.

尼加拉瓜的一位土木工程师已经联系了加利普，这位工程师想在重型设备无法到达的地方建造由混凝土拱架支撑的土坯屋顶。

youdao

And, in fact, it can't even reach n, because then we would have no potential energy at all in our electron, which is not correct.

事实上，它连n都达不到，因为如果那样的话,电子就没有势能了，这是不可能的。

麻省理工公开课 - 化学原理课程节选

Last time we reach the third law which is telling us that we can't quite get to zero degrees Kelvin .but that as the temperature approaches zero degrees Kelvin, the absolute entropy of a pure substance in perfect crystalline form is zero.

上次课我们得到了热力学第三定律,这个定律告诉我们我们无法,达到0K的温度,但是在我们接近绝对零度的过程中，以完美晶体形式存在的纯物质的绝对熵,也趋向于零。

麻省理工公开课 - 热力学与动力学课程节选

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