他用赤手空拳把圆木折成了两半！

He broke the log in two ___with ___his ___bare ___hands!

我学会了如何徒手挤牛奶。

I learned how to milk a cow ___with ___my ___bare ___hands.

这位生存专家可以徒手生火。

The survival expert can start a fire ___with ___his ___bare ___hands.