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在人类探索自然界奥秘的艰难历程中,一代代科学巨人经过不懈的努力,摘取了一串串明珠。从各国发行的纪念邮票上,可以看出印在探索之路上的一行行凝重坚实的脚印。
In the difficult journey of human exploration of the mysteries of nature, generation after generation of scientific giants made unremitting efforts to extract a string of pearl strings. On commemorative stamps issued by various countries, one can see the sturdy and solid footprints printed on the road to exploration.