1To be well-kneaded; to become soft and uniform after kneading (e.g., dough or clay).
パンの生地がよく練れて、表面がなめらかになった。
The bread dough was well-kneaded and the surface became smooth.
陶芸では土が練れていないと気泡ができやすい。
In pottery, if the clay isn't properly kneaded, air bubbles are likely to form.
2To be seasoned or well-experienced; to be mature and well-rounded (e.g., a person's skills or style).
長年の訓練で彼の技術は練れている。
His technique is well-honed after years of training.
この脚本は何度も直されて練れてきた構成だ。
This script has been revised many times and grown into a well-crafted structure.