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Scientists spend years on research, _ their findings, and these findings are examined by other scientists. That’s how we learn. Like climbing a mountain, we _ three feet and fall back two. It’s a process filled with _ ,but somehow we keep moving ahead.

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译文:科学家经过多年研究发布成果，其成果再由其他科学家加以检验/物品，我们就是这样增进知识的。正如爬山，我们费力爬上三英尺，又掉下去两英尺。这是个充满失望与挫折的过程，但不管怎样，我们一直往前迈进。

词语解析

announce[ə'nauns] vt.

正式宣布, 宣告, 发表

报到, 通知

预示, 预告, 预言

显示

广播(电台节目)

announce guests
通知客到

announce dinner
通知开宴[饭]

It has been announce d that Mr. A and Miss B will be married next week.
已正式宣布A先生与B小姐将于下星期结婚。

struggle up 有经过努力起来的意思

What deserve that we are prode of most is not that we never fall down but that we can struggle up each time we fall down.
我们最值得自豪的不在于从不跌倒，而在于每次跌倒之后都爬起来。