See my comments - please take it with a grain of salt
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eldership: not sure the usage here. You can just use "elders"
by jeering: not sure what it means
yellow outside but white inside --> yellow on the outside but white on the inside
另外, 不是 "old brother,old sister" for 哥哥,姐姐, 應是 “elder brother, elder sister". While "older brother" might be acceptable, but “old brother” is not correct
請參考: