One cc of chicken sperm, for instance, which contains 5 billion sperm cells, can be stored at a temperature of minus 196 degrees centigrade for 11 or 12 years.
像是一 cc 的雞精液中，便有五十億隻精蟲，將精液放在攝氏負一百九十六度的液態氮之中，就可保存十一、二年。