He decided to improve himself.
他决心自我提高。
He decided to improve his reading comprehension in English by reading China Daily every day.
他决定通过每天读中国日报来提高英语阅读能力。
He decided to improve himself.
他决心自我进步。
They decided to improve the feed safety assurance according the highest international standard.
企业将采用业界最高标准提升饲料安全保障。
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