shopping sentences

docs/.vitepress/theme/components/VocabQuiz.vue

@@ -490,7 +490,8 @@ async function explainSentence(ko: string) {
         role: "system",
         content: `
           Explain in ${LANG_EXPLAIN} how this sentence works in 500 characters.
-          Give me key vocabularies.
+          Give me key vocabularies in a table.
+          Don't give romanization forms.
           `,
       },
       { role: "user", content: ko },