

この機械の部品は全部で何個ありますか。
壊れた部品を新しいものに交換しました。
小さい部品をなくさないように気をつけてください。
"ぶひん(部品)" is in the lesson "Geometric figures" (Level 45), 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.