重扇(Tradescantia navicularis)，鸭跖草科重扇属植物、也称多浆植物。原产秘鲁北部。
他锁牢了那扇重门把钥匙放在了他的口袋里。
He locked the heavy door securely and kept the key in his pocket.
答：每扇大门有4吨重，上面的横梁叫管扇；是青铜的。
Answer: the gate is about 4 tons every piece; the crossbeam is called the lintel; It is made of bronze.
利用断面沟扇体系及基底形态、地震反射结构、粘土矿物组合、岩屑类型、重矿物组合明确古流向和物源。
Source orientation was studied by using Basement and fractured surface form, Seismic Reflection structure, Clay mineral Assemblages, cuttings type and heavy mineral Combination.
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