例句： Wet the clay a bit more before you start to mould it.

例句： Medical tests showed that he was sterile.

例句： He soon fell asleep with weariness.

例句： Carbon has 4 valencies.

例句： The import of cotton goods went up sharply in 1986.

例句： I'm shaking like a leaf.

例句： I engaged the clutch and the car moved forwards.

例句： The dog gave me a nasty nip on the leg.

例句： A public institution for the care and protection of children without parents.

例句： The new car had to be withdrawn from the market because of a mechanical defect.