黄先生的评论促使韩国幼儿园把木头筷子换成金属筷子。
Mr Hwang's comments encouraged South Korean kindergartens to swap wooden chopsticks for metal ones.
大部分筷子都用竹子和塑料制成，也有由金属、骨、象牙和各种木材制成的。
Chopsticks are most commonly made of bamboo or plastic, but are also made of metal, bone, ivory, and various types of wood.
李佳（音译），原先是废弃金属出口商，去年底他发现了一个商机，开始为中国市场生产筷子。
Jae Lee, a former scrap-metal exporter, saw an opportunity and began turning out chopsticks for the Chinese market late last year.
他指出，一颗20年树龄的树木只能生产出4000双筷子。 他甚至还建议，餐馆应该直接使用金属制的刀叉代替筷子。
Pointing out that only 4,000 chopsticks can be carved from a 20-year-old tree, he even went so far as to suggest that restaurants offered metal knives and forks instead.
他指出，一颗20年树龄的树木只能生产出4000双筷子。 他甚至还建议，餐馆应该直接使用金属制的刀叉代替筷子。
Pointing out that only 4,000 chopsticks can be carved from a 20-year-old tree, he even went so far as to suggest that restaurants offered metal knives and forks instead.
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