He had his coins exchanged.

His name is Tai, which means peace.

The police apprehended the criminal.

He is the leader of that team.

A skew-symmetric matrix has the characteristic that its transpose matrix is the inverse of the original matrix.

A diagonal matrix is a matrix in which all elements outside the main diagonal are zero.

The diagonal elements of this matrix are all 1.

The signal from the cell phone relay-station in this area is weak.

I create a balance sheet every month to understand my financial situation.

The Taiwan Strait is the strait that separates China and Taiwan.