现在，99%的小学生都亲手操作过电脑。Ninety-nine per cent of primary pupils now have hands-on experience of computers.这是他亲手种的花.This is the flower he planted with his own hands.这些蛋糕是你们亲手做的 吗 ?Did you make these cakes yourselves?...
一件是猪皮的.One is made of pigskin.桑格拉斯先生就去掏他那个猪皮小提包了.Mr. Samgrass delved again into his pigskin satchel.磺化油SEO、磺化油STO对提高无铬鞣猪皮服装革撕裂强度有明显的优势.SEO and STO had advantages in improving the tearing strength of leather....