something good that happens by chance
偶然に起こる良いこと (gūzen ni okoru yoi koto)
"It was a stroke of luck that I found my lost wallet."
"失くした財布を見つけたのはまさに幸運の一撃でした。" (Nakushita saifu o mitsuketa no wa masani **kōun no ichigeki** deshita.)
to spread rapidly, especially online
to decide something
unnoticed or undetected
The time a startup has before running out of cash.
to summarize something briefly
To radically change an industry with innovation.
