马甲线

英文翻译A pair of vertical muscle lines running down the sides of the abdomen, formed by well-developed abdominal muscles and low body fat. On social media, having these lines is treated as a fitness goal that people show off and work toward.

流行年代：

2012—2015

英文翻译Visible muscle lines along the sides of the abdomen, often the obliques, that form a defined contour. It is a popular fitness goal and a common subject of workout photos shared on social media.