precursor
英式读音[prɪ'kɜːsə]
美式读音[pri'kɝsɚ]
TOEFL
中文解释
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先驱英释中释
Error is often the precursor of what is correct..错误常常是正确的先导。
Viewed as a precursor to a wider open data movement, it could be as important as any we have seen in the web era..它被视为更宽泛的数据开放运动的先导，它将像我们在互联网时代看到的所有重要的事物一样重要。
precursor chemicals,易制毒化学品
