mostly简单

attract mostly young readers.

主要吸引年轻读者。

Britain has relatively few butterfly species compared with mainland Europe and 80% are in decline, mostly because intensive chemical farming has reduced many species to tiny fragments of habitat and small nature reserves.

与欧洲大陆相比，英国的蝴蝶种类相对较少，而且其中80%正在减少，这主要是因为集约化的化学农业使许多物种只能栖身于零星的小块栖息地和小型自然保护区。

These are mostly students who had no opportunity as children to travel to wilderness areas, wildlife refuges or national parks.

这些学生大多在童年时没有机会去荒野地区、野生动物保护区或国家公园。

Meanwhile, it has more than $120 billion in unfunded liabilities, mostly for employee health and retirement costs.

与此同时，它还有超过1200亿美元的无资金准备的负债，主要用于员工的医疗和退休费用。

Suppose you are in a room with someone you don’t know and something within you says “I want to talk with this person” — this is something that mostly happens with all of us.

假设你和一个不认识的人待在一个房间里，你的内心有个声音在说“我想和这个人聊聊”——这是我们大多数人都会遇到的情况。

But while young and old mostly agree on what constitutes the finish line of a fulfilling life, they offer strikingly different paths for reaching it.

但是，尽管年轻人和老年人在什么构成充实人生的终点线这一点上大体一致，他们提出的抵达路径却截然不同。