长时间用手机，你会变成“低头族”，因为常常低着头，你的双下巴会越来越明显。
cháng shíjiān yòng shǒujī ，nǐ huì biànchéng “dītóuzú ”，yīnwèi chángcháng dī zhe tóu ，nǐ de shuāngxiàba huì yuèláiyuè míngxiǎn 。
When you use your cell phone for a long time, you'll become one of those people who walk along the street with their eyes lowered, fixed on their phones. As you often lower your head, your double chin will become more and more noticeable.