I can climb the tree without a ladder.

我不用梯子就能上树。

youdao

I can climb up the tree without a ladder.

我不用梯子就能爬到这棵树上去。

youdao

Doing this proved next to impossible without a ladder.

要做这事没有梯子可以说是不行的。

youdao

When it was Ware's turn, officials lowered the hoop so he could reach it without climbing a ladder.

WSJ: For Louisville, Title Was in the Cards

An exhibitor can now change a light bulb without an electrician present (so long as the job does not require a ladder) and set up his own display (so long as it can be done in less than half an hour, with no tools).

ECONOMIST: The convention business

Without a stable family, their chances of moving up the education and income ladder are stunted, which in turn reduces their odds of getting married as adults.

WSJ: The New Unmarried Moms