Complex analysis is a branch of mathematics that studies functions of complex numbers.

This problem requires complex combinations.

Mercury is a harmful element for the body.

He was making a loud noise while sleeping.

The ears of grain are swaying in the wind.

The character '穗' is the old form of the character '穂'.

Dotted gizzard shad is a fish commonly seen in the seas of Japan.

Please call the names in order.

My house is arranged according to Feng Shui.

My grandfather is a master of water ink painting.