• adj. 多年生的；常年的；四季不斷的；常在的；反復的
• n. 多年生植物

per-,整個的，-enn,年，詞源同annual.原義為終年的，終年不凋的，后引申詞義多年的，長久的。

perennial (adj.)

1640s, "evergreen," formed in English from Latin perennis "lasting through the year (or years)," from per- "through" (see per) + annus "year" (see annual). Botanical sense of "Remaining alive through a number of years" is attested from 1670s; figurative meaning of "enduring, permanent" is from 1750. Related: Perennially. For vowel change, see biennial. The noun meaning "a perennial plant" is from 1763.

1. A perennial is a plant that lives indefinitely.

多年生植物是指能存活很多年的植物。

來自柯林斯例句

2. the perennial problem of water shortage

缺水這個老問題

來自《權威詞典》

3. I wonder at her perennial youthfulness.

我對她青春常駐感到驚訝.

來自《簡明英漢詞典》

4. There's a perennial shortage of teachers with science qualifications.

有理科教學資格的老師一直都很短缺。

來自辭典例句

5. The novel's central theme is the perennial conflict between men and women.

小說的主題是男人和女人之間永無休止的沖突。

來自辭典例句