(as) sound as a bell

in perfect condition

情況極佳

sound off

To express one's views vigorously

高聲談?wù)摚河辛Φ厥惆l(fā)自己的見解

was always sounding off about higher taxes.

總是就更高稅收有力地抒發(fā)自己的見解

To count cadence when marching in military formation.

報數(shù)：喊行軍齊步走口令