trillium

['triliəm]

n. 延龄草

例句与用法：

The ordinal number matching the number one trillion in a series.

第一万亿，第一兆可数数列中与一万亿相对应的序数

Mr.Reagan's nearly $2 trillion in Federal and trade debt(or $30,000 per family) will be a ball and chain around the neck of economic growth.

里根先生将近2兆联邦及贸易负债(亦即每户3万元)将是经济成长的绊脚石。

详细释义：

n.

【植】延龄草属植物