He was aged between 25 and 30, with a medium build and collar-length mousy hair.

他年龄在25到30岁之间，中等体格，有一头长至衣领的暗棕色头发。

《柯林斯英汉双解大词典》

Nowadays, many young girls of medium build tend to lose weight to look more beautiful, which for them can help improve their confidence.

当下，有很多中等身材的年轻女孩倾向于通过减肥来让自己更好看，对于她们来说这样能够帮助提升自信心。

youdao

He's described as around thirty years old, six feet tall and of medium build.

他被描述为大约三十岁，身高6英尺，体格中等。

《柯林斯英汉双解大词典》

Mrs Cameron is described as 5ft 3in (1.6m) tall, of medium build, with short-bobbed blonde hair.

BBC: Police concern for missing woman Meryl Cameron

The offender is described as white, about 5ft 10in (1.78m) tall and of slim to medium build.

BBC: March release of CCTV footage of attack at Dunstable garage

He is described as black, about 20 to 30 years old, 5ft 5in and of medium build.

BBC: Naomi Oni acid attack: Man and woman arrested