这些由当地人引进的入侵物种没有天敌。
These invasive species – brought to the island by people – have no natural predators.
至少从目前看来，训练工作是由当地人一手操办的，没有什么外来人参加。
So far at least, most training appears to be a local affair in which few outsiders are involved.
新加坡夜间飞行风筝俱乐部的会员在这里聚会，享受这一形式独特的飞行器，它是由当地人迈克尔·林姆在2000年发明的。
Members of the Singapore Night Flyer Kite Club meet here to enjoy the unique aircraft, which were invented in 2000 by native Michael Lim.
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