The packing must be strong enough to withstand rough handing.
包装必须很坚固,能承受野蛮装卸。
And so with solids such as a shell, a nut, a plum, a pear, a tadpole, a mushroom, a mountain peak, a kidney, a carrot, a tree-trunk, a bird, a bud, a lark, a ladybird, a bulrush, a bone.