1. She noticed a loose button on my shirt and sewed it on while we visited. 我们去拜访她时，她注意到我衬衣上的一个扣子松了，还帮我缝上了。
2. Some parts can be sewed by machine, the tiny parts by hand. Sew the parts together piece by piece. Keep them together so that you don't get confused. 有些部分可以用机器缝，细小的部分要用手工缝。把这些部分一片片地缝到一起。请将它们放到一起以防止混淆了。
3. Chemically preserving skins, hair, and feathers made it possible to recreate the appearance of live animals by stuffing the sewed-up skin with straw or hay. 运用化学方法保存动物皮肤、毛、羽以免腐坏，再用干草填充动物皮张，从而栩栩如生地表现动物的外貌。
