What does it mean that the shadows are shallow and the dusk is fragrant?

From Lin Bu, a poet in the Northern Song Dynasty, his seven laws are Xiao Mei in the Mountain Garden.

The original poem is:

Flowers withered, unique plum blossoms swept out against the wind, and the scenery of the small park was beautiful.

"Mottled shadows hang obliquely on the clear shallow water, and their fragrance spreads peacefully in the moonlight dusk."

Cold birds want to fly, first glimpse plum blossoms; Butterflies will be enchanting if they know the beauty of plum blossoms.

Fortunately, there are micro-songs to compare, and there is no need for sandalwood gold statues.

[Note ]( 1) Zhong Fang: A hundred flowers blossom. Shake down: blown down by the wind. Xuanyan: Mingli. (2) Sparse oblique shadows: plum blossoms are scattered and oblique branches are thrown into the water. (3) Fragrant fragrance floating: the fragrance of plum blossoms is floating. (4) Frost bird: cold finch. (5) Close: It should be. (6) whispering: singing in a low voice. (7) [sound "gorge"]: Guan. (8) Sandalwood board: Sandalwood and cypress board for singing. Golden bottle: a luxurious wine glass.

Flowers wither, unique plum blossoms proudly bloom against the cold wind, and bright and gorgeous scenery occupies all the scenery in the small garden. Sparse shadows, sideways in shallow water, fragrant in the moonlight at dusk. Cold birds want to fly down, first glance at plum blossoms; When butterflies know the beauty of plum blossoms, they will lose their souls. Fortunately, I can recite in a low voice, get close to plum blossoms, don't have to knock on sandalwood to sing, and insist on drinking and enjoying in the golden cup.

References:

Notes on Common Ancient Poems of Jiang, Wei Liangcheng