Example sentences of "layer of [noun sg] on the " in BNC.
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1 | A layer of ice on the sides of a concrete pond may cause it to crack , leading to inevitable leaks . |
2 | It 's also far more effective than planting in a layer of soil on the bottom of the pond . |
3 | The tank was washed out too , and placed on a layer of polystyrene on the stand . |
4 | If there is a thick layer of sediment on the bottom , start using a product like A.B.A. to help remove this sludge — but you will have to increase the aeration of the water while you use it as it can cause a heavy demand on the dissolved oxygen to remove the sludge . |
5 | To avoid this I propose to place a layer of mortar on the lining and lay bricks on top which will be covered by slabs . |
6 | To keep Tubifex worms , the aquarium must have a layer of mud on the bottom and a supply of fresh-water continuously dripping into the aquarium . |
7 | The windows were fairly clean — well , you could see through them — the layer of dust on the woodwork was thinner than usual and the compartment was reasonably warm . |
8 | The subsequent assignment of levels of attainment to certain age groups introduces a further layer of control on the ability of schools to respond to diversity . |
9 | The AA had earlier warned drivers to beware as there was a layer of frost on the road , making conditions treacherous . |