by feat of

• 凭靠 ... 的力
• 借助于 ...

by feat of的用法和样例：

例句

1. He crossed the river by the aid of a tree.
   他借助于一棵树过了河。
2. Mass flow information can be secured by using a densitometer.
   质量流量的数据可借助于密度计而获得。