up to
inner feelings
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→you2zhong1 • yóuzhōng
sincere
sincerely, heartfelt
我 由衷 感謝 你 的 幫助。
I sincerely thank you for your help.
她 給 我 一 個 由衷 的 微笑。
She gave me a sincere smile.
我 由衷 希望 你 一切 順利。
I sincerely hope everything goes well for you.