不純物が入り込むのを防ぐ必要がある。
It is necessary to prevent impurities from getting in.
Listen to pronunciation
Example sentences
マスクを着用することで、ウイルスの感染を防ぐことができます。
By wearing a mask, you can prevent the spread of the virus.
敵軍の攻撃を防ぐために、援軍が派遣された。
Reinforcements were dispatched to prevent the enemy army's attack.
兵士は盾を構えて、敵の攻撃を必死に防いだ。
The soldier held his shield and desperately fended off the enemy's attack.
汚れを防ぐために、ソファにカバーをかぶせた。
I put a cover on the sofa to prevent dirt.
Usage Notes
Refers to stopping something undesirable from entering or occurring.
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