

すべての人を幸せにするのは不可能ですか。
一日でこの本を全部読むのは不可能です。
不可能なことなんて、ないと思うよ。
"ふかのう(不可能)" is in the lesson "Philosophy" (Level 44), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.