I don't need a too long one, and paired blades are best, with 20-25cm long blade.

偶不需要太长的，最好是双刃，刃长有20 - 25厘米就可以。

youdao

By using 3d solid model, the twist-back Angle of steam turbine twisted long blade with integral shroud was analyzed and calculated.

采用三维实体模型，对自带围带的汽轮机扭曲长叶片的扭转恢复角进行了计算分析。

youdao

Whether you're aiming for layers of plywood or cardboard or a bale of hay, if that foot-long blade hits an Angle, it could come ricocheting back at you.

不管是几层胶合板、纸板还是一大捆干草，万一飞刀打在不平的表面上，它很可能会朝你自己反弹回来。

youdao

After all, a blade of grass is alive, and I presume that even fans of the, what we might call valuable container theories, don't think that, " "Oh, wouldn't it be wonderful if-- " as long as I was alive in the way that a blade of grass is alive."

毕竟，一片草叶也是活着的，我觉得就算是，有价值容器理论的粉丝们，也不会认为，“活着不是很棒吗-,“即便是像一片草叶那样活着“

耶鲁公开课 - 死亡课程节选

For an ultra long blade, it could take as much as a year.

FORBES: Connect

The last item taken out of the pack was a long, sheathed blade.

NPR: Excerpt: 'The Assassins Gallery'

Under the plan, knives with blades that are 2.36 inches or shorter and less than a half-inch wide will be allowed in airline cabins so long as the blade is not fixed or does not lock into place.

CNN: U.S. to keep restriction on small knives on planes for now