solid ground造句
(31) The trick to mastering backflips on a trampoline is to practice each phase of a back handspring on solid ground before putting it all together.
(32) Whooper swans take off mostly on water, but can do so on solid ground, using a short run and beating their massive wings to achieve liftoff.
(33) He is on solid ground when he writes about the details of Milton's life.
(34) High-arsenic concentrates can be smelted to white metal in a cyclonic reactor, and the solid ground white metal be converted to blister copper in a second cyclonic unit.
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