单词：welwitschia
音标：[wel'witʃiә] ；
n. [植]千岁兰
n curious plant of arid regions of southwestern Africa having a yard-high and yard-wide trunk like a turnip with a deep taproot and two large persistent woody straplike leaves growing from the base; living relic of a flora long disappeared; some may be 700-5000 years old
词型变化：名词复数形式 : welwitschias