以下为句子列表：
英文: Key to the exercise were two factors: One, it provided the RSAF access to new air training space and two, to engage for the first time, with Russian-made aircraft using different weapon platforms.
中文: 演习要旨有二：一，让新加坡空军有机会尝试新的空战训练；二，获得与俄制战机与武器过招的机遇。
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