It should drift back from the boat , floating on the surface , and should terminate in a large , visible float 它必须能够从船上拽回，能够浮在水面上，尾端固定在一个足够大的可见漂浮物上。
The limestone absorb impurity from the ore and form a fluid slag which floats on the surface of the heavier molten iron 石灰石吸咐了铁矿石中的杂质，形成浮在较重的铁水表面上的流动渣。
Discard the foam floating on the surface of the soup , add bok choy and cook until done . add salt to taste and sprinkle with pepper . remove and serve 撇掉浮在汤面的泡沫，加入青江菜煮熟，并加盐调味，最后撒下胡椒粉即可盛出食用。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 从漂浮在静止或者缓慢流动的水面上的浮萍，到位于激之流中的长着根和柔软茎的植物。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 一些植物，例如浮萍漂浮在平缓的水面上，而一些有着柔韧枝条的根生植物则扎根于激流中。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 浮萍类的植物漂浮在静止和慢慢移动的水面上，而有根和软茎的植物可以立在快速流动的水流中。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 像浮萍这样的植物在水流平缓的水面漂浮，而那些长着根和柔软的茎的植物可在水流湍急的小溪中扎根。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 一些如浮萍的植物漂浮在静止或慢速流动的水面，而一些植物的根和柔软的茎则可以立于快速流动的水流中。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 浮萍的植物漂浮在寂静或者流动缓慢的水面上，而那些有根系和柔韧茎干的植物就可以扎根在湍急的河川中。
Plants like duckweeds float on the surface of still and slow - moving waters , while those with roots and flexible stems can stand in swift - flowing streams 像浮萍一样的植物漂浮在静止和缓慢流动水面上，而那些有根而且茎干柔软的植物能在快速流动的溪流中站立。
