a.m

n.

a radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms

同义词：americiumAmatomic number 95

a master's degree in arts and sciences

同义词：Master of ArtsMAArtium MagisterAM

modulation of the amplitude of the (radio) carrier wave

同义词：amplitude modulationAM

1. The meeting is scheduled for 10 a.m. tomorrow.
   会议定于明天上午10点召开。
2. She usually gets up at 6 a.m. every day.
   她通常每天早上6点起床。