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phòng thủ + 
to defend 人人 都 应当 捍卫 世界 和平 。 +
Rénrén dōu yīngdāng hànwèi shìjiè hépíng.
It's everyone's duty to defend world peace. +
长城 可以 用来 防止 外寇 入侵 。 +
Chángchéng kěyǐ yòng lái fángzhǐ wàikòu rùqīn.
The Great Wall was used to defend against incursions by foreign invaders. +
like: to defend
to defend ☊ 
phòng ngự ☊