As fresh as a daisy.

生动活泼

Beauty is a fading flower.

美人暮年

The flower of one's youth.

精英

Flower of youth.

含苞欲放

push up the daisies

死了,入棺材了

The last rose of summer.

夏天最后一朵玫瑰

Let one thousand flowers bloom.

百花齐放

Like a hot house flower

温室里的花朵

One flower does not bring spring.

一花独放不是春

come up roses

拨开云雾见太阳

see through rose-colored glasses

乐观看问题

To gild refined gold, to paint the lily.

画蛇添足

April showers bring forth May flowers

四月春雨五月花

A bed of roses –

快乐人生

There's no rose without a thorn

没有不带刺的玫瑰