Seeking knowledge is a perpetual struggle against ignorance.
索求知识就是不断地战胜愚昧无知。
Experimenting with new ideas is a perpetual struggle against sloth.
尝试新想法就是不断地克服懒惰。
On the part of many extremely needy couples with children, life is a perpetual struggle against poverty.
对于很多有孩子的贫困的夫妻而言，他们的生活就是和贫困永恒斗争的过程。
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