切磋琢磨(せっさたくま)

diligent mutual improvement

切磋琢磨(せっさたくま)する

to improve oneself through friendly competition

琢磨(たくま)

polishing; cultivation

琢磨(たくま)する

to polish; to cultivate

彫琢(ちょうたく)

carving and polishing; refinement

琢玉(たくぎょく)

polishing jade

琢句(たくく)

refining poetic or literary expressions

琢削(たくさく)

polishing and cutting; refinement

若手研究者(わかてけんきゅうしゃ)たちは互(たが)いに切磋琢磨(せっさたくま)し、技術(ぎじゅつ)を高(たか)めている。

The young researchers hone their skills through friendly competition.

長年(ちょうねん)の琢磨(たくま)を経(へ)て、彼(かれ)の技(わざ)は完成(かんせい)の域(いき)に達(たっ)した。

After years of polishing his craft, his skill reached a level of perfection.