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》

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》

Elegance: Elegance are often described as medium build, symmetrical facial features, well-proportioned physique, and conservative attitude towards life.

优雅：优雅通常认为是中等的身高，匀称的面容，比例良好的身型，对生活持保守的态度。

youdao

He was of medium height and build and was politely spoken.

BBC: Woman, 95, robbed in her Newlands home

The man is described as white, about 6ft tall, of medium build and in his early to mid 30s.

BBC: Thief in Guildford takes phones worth ?17,000

He is of medium build and was wearing a dark hooded sweatshirt with the hood pulled tight across his face.

BBC: Police warn 'lock car doors' after attack on woman