If we didn't have nails, the tips of our fingers would just be weird soft lumps of skin.

如果我们没有指甲的话，我们的指尖就会变成奇怪的、柔软的皮肤块。

He has a flat wheel in front of him on which he places the soft lump of clay, and as it spins round he moulds it with his hands into any shape he likes.

陶工前面有一个扁平的轮子，他把软粘土放在上面，轮子一边转，他就一边用手，把粘土塑造成他想要的形状。