形容詞 envious:

1. showing extreme cupidity; painfully desirous of another's advantages
   同義詞：covetous, jealous

1. Aged people are always envious of young people's energy.
   上年紀(jì)的人總羨慕年輕人的精力。
2. I am envious of his success.
   我羨慕他的成功。

en.vi.ous

adj.（形容詞）
Feeling, expressing, or characterized by envy:
羨慕的：感到、表現(xiàn)、或以嫉妒為特征的：
例句：
.At times he regarded the wounded soldiers in an envious way. . . . He wished that he, too, had a wound, a red badge of courage.(Stephen Crane)See Synonyms at jealous
.有時(shí)侯，他竟羨慕那些受傷的士兵…他希望他也有一處傷口，一枚紅色英勇勛章.(斯蒂芬·克蘭)參見 jealous

Archaic Eager to emulate; emulous.
【古語】 努力趕上的；好勝的

【引伸】
en.viously
adv.（副詞）
en.viousness
n.（名詞）