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.
一条扇尾金鱼重约4公斤，很容易照顾。
A fantail goldfish weighs about 4 kilograms, they are easy to look after.
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.
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