They used to barter for horses with salt.

他们过去以食盐交换马匹。

youdao

If you have a skill, such as cooking, animal husbandry, massage, musical ability or basic carpentry, you can barter for free food and accommodation as you travel.

如果你拥有一项技能，如烹饪，畜牧，按摩，音乐能力或基本木工，你可以以此来为你的旅行交换免费食物和住宿。

youdao

If you have a skill, such as cooking, animal husbandry, massage, musical ability or basic carpentry, you can barter for free food and accommodation as you travel.

如果你有一技之长，比如烹饪、饲养动物，按摩，音乐才能活着一些基本的木工活，你就可以拿这些来换免费的食物和住处了。

youdao

The state forces the economy away from barter for its own fiscal purposes.

ECONOMIST: Free exchange

That, of course, will enable the Greek government to barter for softer terms in the hope that may sway the voters.

BBC: Greek PM's big gamble on eurozone deal referendum

Might he, instead, offer something in barter for the flowers?

NEWYORKER: Another Manhattan