孩子们依偎在父母的怀里。

The children are nestled in their parents' ___arms.

士兵们放下武器投降了。

The soldiers laid down their ___arms and surrendered.

盾牌上镌刻着他们贵族血统的古老纹章。

The shield bears the ancient ___arms of their noble lineage.

空军是现代化军队的重要兵种之一。

The ___air arms is one of the key branches in a modern military.