By the left flank, march!

向左转走！

《新英汉大辞典》

On the left flank a danger alarm.

左腰上有一个危险报警器。

youdao

He was severely shocked, and had four stab wounds, each LCM. Long: 2 in the left precordium and 2 in the left flank.

病人严重休克，有四处刀伤，2个伤口在左心窝，另外2个伤口在左季肋部。

youdao

But the difficulty is, if you take your left flank and move it out here so you can flank this guy, one of two things has to happen to your army.

但困难的是,如果你把左翼移到这里,你可以进攻敌人的侧翼,你的军队会面对下面两种情况

耶鲁公开课 - 古希腊历史简介课程节选

Rooney was a peripheral figure, pushed to the margins of the game on the left flank.

BBC: Barcelona 2-0 Man Utd

Nacho Novo made a darting run down the left flank to provide a target for left-midfielder Charlie Adam.

BBC: FBK Kaunas 2-1 Rangers (agg 2-1)

Victor Moses fired the Latics ahead after cutting in from the left flank.

BBC: Wigan 2-2 Hull