Marsabbr. master attitude reference system 主要态度参考系统;midair retrieval system 中空恢复系统;military affiliated radio system 军用附属无线电系统;mathematics anxiety rating scale 数学焦虑等级刻度;
n. 毁坏,损坏,玷污( mar的名词复数 );
v. 毁坏,损坏,玷污( mar的第三人称单数 );
It soon became clear that the straight part of the dance changed when the sun's position changed. If the feeding place was toward the sun, the dancer headed straight upward during the straight part of the wagging dance.