練(ね)るto knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march

粘土(ねんど)を手(て)のひらで練(ね)る。

Knead the clay with your palms. {to knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march}

和菓子(わがし)職人(しょくにん)が必死(ひっし)に餡(あん)を練(ね)っています。

The Japanese sweets artisan is desperately kneading the bean paste. {to knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march}

計画(けいかく)を成功(せいこう)させるために何(なん)度(ど)も計画(けいかく)を練(ね)った。

In order to ensure the success of the plan, I polished and refined it multiple times. {to knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march}

人格(じんかく)を練(ね)るべく、私(わたし)は敢(あ)えて自分(じぶん)を辛(つら)い環境(かんきょう)下(か)においている。

In order to refine my character, I deliberately place myself in difficult environments. {to knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march}

必死(ひっし)に文章(ぶんしょう)を練(ね)ったとあって、国語(こくご)の先生(せんせい)に自分(じぶん)の文章(ぶんしょう)を褒(ほ)められました。

Because I worked hard to refine my composition, my Japanese language teacher praised my writing. {to knead, to thicken into a paste (stirring over a flame), to polish (a plan, etc.), to refine, to elaborate, to work out, to train, to drill, to exercise, to gloss (silk), to soften, to degum, to tan (leather), to temper (steel), to walk in procession, to parade, to march}