As many as 100,000 Australians could be carrying a genetic mutation that predisposes them to low bone density and a higher risk of bone fractures.是什么意思_As many as 100,000 Australians could be carrying a genetic mutation that predisposes them to low bone density and a higher risk of bone fractures.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句