台阶法的英文：
benching tunnelling method

benching是什么意思：
n. 长凳；工作台；法官（席）；议员席；替补席
v. 给…以席位；为…设置条凳

They stopped and sat on a park bench.
他们停下来，坐在公园长椅上。

The lamp is on the laboratory bench.
台灯在实验台上。

Here's the opposition benches.
这儿是反对派议席。

tunnelling是什么意思：
n. 地下通道；洞穴
v. 挖掘隧道；打开通道

The engineers sank a tunnel into the ground.
工程师们在地下挖了个隧道。

The exit of the tunnel is concealed.
地道的出口开在隐秘的地方。

A tunnel was to be blasted through the mountains.
一条隧道要被炸开，穿山而过。

method是什么意思：
n. 方法；条理

It is a method.
它是一个类函数。

The method is a natural.
这方法一定灵。

The diffraction method is appreciably lower than that of the spectroscopic method
衍射法的精确度显然低于光谱法的精确度。