While working on the Japanese version over answering the CSS survey, I found:

The string "ほかの技術やパターン" isn't defined in state_of_css.yml but rather in state_of_js.yml:
https://github.com/StateOfJS/locale-ja-JP/blob/948aa58c1e29314782251ac9d51775a6151c9d4f/state_of_js.yml#L42-L45
Is it because they share the same key name sections.other_features.title?