The people were in their early to mid-forties at the time.They were all part of a long-term health study that included measurements of belly fat.是什么意思_The people were in their early to mid-forties at the time.They were all part of a long-term health study that included measurements of belly fat.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句