你送给我桃子,我就回报给你李子。意思是做人要知恩图报,不能忘恩负义。也比喻礼尚往来,相互赠送礼物。
可持续性不是一种趋势,而是乳制品农业的未来。
I always try to be positive and optimistic in life.
Science is not only a discipline of reason but also one of romance and passion.
攻击我很厉害我也回敬得很厉害,攻击我很轻微我也回敬得很轻微。