It was a breakthrough for me.
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Related: breakthrough
Prev: Scientists have discovered how the Ebola virus enters cells and infects humans, marking a major breakthrough in the battle against the virus after the deadly outbreak in West Africa in March 2014.
Next: China has seen breakthroughs in scientific explorations like the Tianwen-1 ( Mars mission), Chang'e-5 ( lunar probe), and Fendouzhe ( deep-sea manned submersible).
