保(たも)つto keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable

健康(けんこう)を保(たも)つ秘訣(ひけつ)は運動(うんどう)と食事(しょくじ)だ。

The secret to maintaining health is exercise and diet. {to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable}

ビニールハウスの中(なか)の温度(おんど)を二十(にじゅう)度(ど)前後(ぜんご)に保(たも)つ。

Maintain the temperature inside the vinyl house around twenty degrees. {to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable}

肌(はだ)の若々(わかわか)しさを保(たも)つためにコラーゲンを摂取(せっしゅ)する。

To maintain the youthfulness of the skin, collagen is consumed. {to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable}

親会社(おやがいしゃ)との協力(きょうりょく)関係(かんけい)を保(たも)たない事(こと)にはこの会社(かいしゃ)は潰(つぶ)れてしまうでしょう。

If we don't maintain a cooperative relationship with the parent company, this company will likely go under. {to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable}

寿命(じゅみょう)がより長(なが)く保(たも)たれるようになったのは医療(いりょう)が進歩(しんぽ)したからではないだろうか。

Isn't it likely that lifespans have been extended not because of advancements in medical care? {to keep, to preserve, to hold, to retain, to maintain, to support, to sustain, to last, to endure, to keep well (food), to wear well, to be durable}