相似形 similar figures

玉ねぎは、剥いてもむいても、相似形を保ちます。芯はありません。
玉ねぎから、ロシアの入れ子人形、"マトリョーシカ"を連想しますが、日本にも伝統の入れ子人形があります。ネットで“Fukuruma”と検索すると見ることができます。

Onions retain the similar figures, even if the shell would be repeated peeling. They have a no wick.
Speaking of onions, they remind me a Russian nesting doll "Matryoshka", but there are also traditional nesting dolls in Japan. Speaking of onions, it reminds me of a Russian nesting doll "Matryoshka", but there are also traditional nesting dolls in Japan. You can see it by searching for "Fukuruma" on the net.