Big Hurdle: Immigrates finding it hard to communicate in New York
https://www.youtube.com/watch?v=ek24DhSfZ00 3;00 it's a melting pot for every ethnicity. クイーンズ地区はあらゆる人種のるつぼだ。
https://www.youtube.com/watch?v=FHfbkKjo4tw 0:21 Los Angeles truly is a melting pot.
https://www.youtube.com/watch?v=9TSITIsK4eQ 13:56 Detroit auto industry gave birth to the assembly line, the crucible of modern industrial capitalism. 近代産業資本主義のるつぼ
https://www.youtube.com/watch?v=mnfuJIR2W0I 0:56 Tahrir Square, the crucible of the revolution itself 革命のるつぼとなったタハリール広場
参考リンク
http://bridge-english.blogspot.com/2022/08/cauldron.html cauldron 大釜