In colonial times in America (late 1700's) it was still common to use corn-cobs or leaves.

而即使在殖民时期的美国(18世纪后期)，玉米穗或树叶仍是主要洁身工具。

youdao

Finn the Red-Handed had stolen a skillet and a quantity of half-cured leaf tobacco, and had also brought a few corn-cobs to make pipes with.

赤手大盗费恩偷来了一只长柄平底煎锅，外带些烤得半干的烟叶，几个玉米棒子，准备用来做烟斗。

youdao

Now, ethanol is made with corn cobs, which are just a small amount of the corn plant’s total biomass.

如今，乙醇是由仅占玉米植株总量中很小数目的玉米棒子加工而成。

youdao

Fossil fuels, similarly -- we are trying to target fossil fuels and design so that you get fossil -- biomass to replace fossil fuel, but biomass based on, for example, woody materials, based on agricultural waste like wheat straw, corn cobs -- agricultural waste, lumber waste residues -- that's very inexpensive feedstock.

WHITEHOUSE: Press Briefing

His mission: to spread the word about the virtues of home-grown American fuel made from stuff that normally gets thrown away, or in the case of corn cobs, plowed back into the fields.

FORBES: Taking A Ride In A Corn-Cob-Powered Truck