adjective · having a smooth surface and a rounded, full shape or appearance

这颗珍珠晶莹剔透，色泽圆润。

adjective · smooth, rich, and pleasingly full in sound or voice

播音员的嗓音非常圆润。

adjective · smooth and polished in style, personality, or social conduct

经过多年的磨练，他的为人处世变得圆润了许多。