something good that happens by chance
quelque chose de bien qui arrive par hasard (kelk choz de byn ki ariv par azar)
"It was a stroke of luck that I found my lost wallet."
"C'était un coup de chance que j'aie trouvé mon portefeuille perdu." (C'était **un kou de chans** ke j'ai trouvé mon portefeuille perdu.)
to reveal your real character or intentions
a sudden clever idea or solution
a feeling of deep sadness or sorrow
to fail spectacularly
A period of great prosperity followed by a sharp decline.
to suffer from a bad experience or mistake