C. Adjust light shadow:swivel the torch head can adjust the focus to best condition.

调节灯影；通过旋转灯头可调节光斑最佳；

youdao

Bartholdi decided to make a copper statue in the image of a woman — Lady Liberty. High above her head, she would hold a torch of freedom to light the world.

巴塞迪决定创作一尊女性形象的铜像，即自由女神，在她的头顶，她将高举一把照亮世界的火炬。

youdao

Even in my hammock, reading by my head torch, I'd often be surrounded by 20 or so gawping Indians.

即使我在吊床里用手电筒看书，我也经常会被约20个印第安人所包围，他们直瞪瞪地注视着我。

youdao

High above her head, she would hold a torch of freedom to light the world.

VOA: special.2010.05.06

He lies there as a doctor with a head torch tries to pull the shrapnel from his head.

CNN: Heart-rending choices in Syrian warzone hospital

During the winter months in the darkness, after your head-torch's batteries have succumbed and failed in the cold, you are left to feel your way around your environment blindly, whilst being a prisoner of your own mind.

BBC: Surviving the worst winter in the world