1.As a result, the report says, the rate of plant and animal species disappearing is continuing faster than ever before.

ever before以前

2. The U.N. report was based, in part, on one hundred ten national reports on action taken to reduce or stop the loss of biodiversity.

in part部分地,有些,在某种程度上

例句：Tom was only in small part responsible.
      汤姆只有一小部分责任。

3.It warns of the possible collapse of fish species important to the commercial food supply.

warn of警告某人关于某事

例句：The weather station warned of severe snowfalls ahead.
      气象台预报将有大雪。

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