必要时，他们愿为国捐躯。
他儿子为国捐躯而他却投身于教学。
His son gave his life for the country while he gave his life to teaching.
这个小英雄为国捐躯了，人们哀悼了他五天。
The little hero died for his country and people grieved over him for five days.
这个小英雄为国捐躯了，人们哀悼了他五天。
The little hero died for his country and people grieved over him for five days.
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