Illustration: At a chilly riverside picnic spot in Japan, a parent opens an insulated food jar taken from a daypack. Steam rises from the soup inside, and the child beside them holds cold hands near the newly opened mouth with pleased surprise.

JLPT N1suru verbLevel estimated by Bebop

保ほ温おん

hoon

to keep warm

Example sentences

  1. USBバスパワーで暖あたたかい飲のみ物ものの入はいったカップを保温ほおんしておくという製品せいひんが発売はつばいされた。

    A product has been launched that uses the power from the USB to keep hot drinks warm.

    Tatoeba · CC BY 2.0 FR · Source

  2. 灰はいには保温ほおん効果こうかがある。

    Ash retains heat.

    KFTT corpus (NICT), Wikipedia · CC BY-SA 3.0 · Source

  3. これを適温てきおんで保温ほおんすると、納豆菌なっとうきんが増殖ぞうしょくし発酵はっこうする。

    If it is kept at the appropriate temperature, the bacillus subtilis natto increases and fermentation will occur.

    KFTT corpus (NICT), Wikipedia · CC BY-SA 3.0 · Source

Kanji in 保温

  • 保protect; guaranteeOnホ・ホウKunたもつ
  • 温warmOnオンKunあたたか・あたたかい・あたたまる

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