

会議の日程を調整してもらえますか。
椅子の高さはここで調整できます。
みんなの予定を調整するのは、なかなか大変です。
"ちょうせいする(調整する)" is in the lesson "Verbs 20" (Level 43), along with 10 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.