提示：点击例句中的单词，就可以看到词义解释

Lady hale shows herself to be a diligent researcher .

哈尔女士在书中表现出自己是一个勤奋的调查员。

But its implementation requires diligent officials , so not much has happened .

但这项改革的实施需要勤勉的官员，所以实行的不多。

Once upon a time there lived a fisherman . The diligent fisherman went fishing everyday .

从前在那儿住着一个渔夫，勤劳的渔夫每天去打鱼。

He is less diligent than his sister .

他不如他姐姐用功。

Even the most diligent , well-intentioned daily sunscreen wearers are likely doing it wrong .

即使是最勤快诚心的防晒霜使用者也可能会搞错用法。