The hemline is how long a dress, skirt, or coat is — where the bottom edge sits on the body. If a skirt’s hemline is at the knee, the cloth stops at the knee.

The hemline裙襬 is how long a dress, skirt, or coat is指的是一件洋裝、裙子，或外套有多長 where the bottom edge sits on the body也就是下擺落在身體的哪個位置 If a skirt's hemline is at the knee如果一條裙子的裙襬在膝蓋 the cloth stops at the knee布料就是到膝蓋為止

Fashion writers talk about hemlines rising (skirts getting shorter) or falling (getting longer), as if that edge were a line moving up or down the leg. Though actually, the hem itself is the little folded, sewn edge of the cloth; the hemline is that edge thought of as a line, or as a length.

Fashion writers時尚作家 talk about hemlines rising會說裙襬「上升」 (skirts getting shorter)（裙子變短） or falling或「下降」 (getting longer)（變長） as if that edge were a line好像那個邊緣是一條線 moving up or down the leg在腿上上下移動 Though actually不過實際上 the hem itselfhem這個字本身 is the little folded, sewn edge of the cloth指的是布料摺起來、縫好的那個小邊 the hemlinehemline is that edge thought of as a line, or as a length則是把那個邊緣當成一條線，或一個長度來看

People say a mid-calf hemline or an ankle hemline when they want to be exact. You use it of clothes that hang, much more than of trousers, and never of the thread used to sew the edge.

People say大家會說 a mid-calf hemline or an ankle hemline小腿中段的裙襬或腳踝處的裙襬 when they want to be exact想講得精確一點的時候 You use it of clothes that hang你會用它來講會垂下來的衣服 much more than of trousers比講褲子多很多 and never of the thread used to sew the edge而且絕對不會拿來講縫邊用的那條線

It is a fashion and sewing word, not a maths word.

It is這是 a fashion and sewing word時尚和裁縫用語 not a maths word不是數學用詞