There is concern that the giant panda will soon become extinct. 有人担心大熊猫不久就会灭绝。
Many tribes became extinct when they came into contact with Western illnesses. 很多部落由于感染西方人的疾病而遭灭顶之灾。
A lot of trades have become extinct because of the development of technology. 由于技术的发展很多行业都消失了。
Opposites: extant living (CONTINUING)surviving