to verbally express gratitude to someone
誰かに感謝の気持ちを言葉で表現する (dareka ni kansha no kimochi o kotoba de hyōgen suru)
"Don’t forget to say thanks to your teacher before leaving."
"出発前に先生に感謝の気持ちを伝えるのを忘れないで。" (Shuppatsu mae ni sensei ni kansha no kimochi o tsutaeru no o wasurenaide.)
to increase strength or endurance gradually
to keep following a promise, rule, or plan
to look closely or carefully at something difficult to see
to request extra help in a challenging situation
to phone in advance to make arrangements
to clean or improve something; to review or practice
