On the green surface of the lake a little boat, with white wings faintly fluttering, rocked in the dewy breeze.

碧绿的湖面上，一只小船在微风中摇曳着白色的翅膀。

They have various functions, ranging from greening water surface and beautifying courtyards to purifying water , reducing pollution and improving the environment.

它们具有多种功能，从绿化水面、美化庭院到净化水质、减少污染、改善环境。

The rain had stopped, but the windswept course felt suddenly bleak, its brown and green surface littered with discarded betting slips, its horizon flat and empty.

雨已经停了， 但风吹过的球场突然变得凄凉，棕色和绿色的表面散落着被丢弃的投注单， 地平线平坦而空旷。