名詞 aspen:

1. any of several trees of the genus Populus having leaves on flattened stalks so that they flutter in the lightest wind

1. After she learned of the accident, the girl began to shake like an aspen leaf.
   當(dāng)這位姑娘得悉那場(chǎng)意外事故時(shí)，她渾身發(fā)抖。

as.pen

n.（名詞）
Any of several trees of the genusPopulus having leaves attached by flattened leafstalks so that they flutter readily in the wind.
白楊：一種樹(shù)白楊 屬，葉長(zhǎng)在扁平的葉柄上，因此易于隨風(fēng)飄動(dòng)
adj.（形容詞）
Of or relating to one of these trees.
白楊屬：這些樹(shù)的一種或與這些樹(shù)的一種有關(guān)的
Shivering or trembling like the leaves of one of these trees.
象這些樹(shù)的樹(shù)葉一樣抖動(dòng)或顫動(dòng)

來(lái)源：
Middle English aspe
中古英語(yǔ) aspe
from Old English ôspe
源自 古英語(yǔ) ôspe