慢速英语:Australia’s Great Barrier Reef Threatened

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1. significance n.意义; 重要性; 意思
例句：Nobody can achieve anything of real significance unless he works very hard.
一个人要是不努力, 他就将一事无成。

2. examine vt.检查，调查; 考试
例句：The doctor examine the patient carfully.
医生对这位病人作了仔细检查。

3. conduct vt.传导; 引导; 带领
例句：Glass cannot conduct electricity, nor can rubber.
玻璃不能导电，橡皮也不能导电。

4. affect vt.影响; 假装; 感动
例句：Drops of water affect roundness.
滴水成珠。