It's difficult to gauge the size of the transgender population in the UnitedStates.
在美国要想确定变性人口的准确数量并非易事。
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Railroads in the UnitedStates did not settle on a uniform gauge until the 1880s, making interconnections between lines in the North and South complicated, slow, and expensive.
Orbis Ningbo Plastic Packaging products Co., Ltd. is a joint venture between China and Orbis Corporation of the UnitedStates and is specialized in thick gauge thermoformed products.