YOU SAID:

Twelve boys enjoy their new knowledge at the expense of humanity.

INTO JAPANESE

彼は健康を犠牲にして義務を果たした。

BACK INTO ENGLISH

He did duty at the expense of his health.

INTO JAPANESE

彼は健康を犠牲にして義務を果たした。

BACK INTO ENGLISH

He did duty at the expense of his health.