烙铁的英文：
iron
searing-iron
soldering iron

参考例句：

"Let the irons be heated," said the doctor; "but really it is a useless precaution."
“那么，去把烙铁烧烧拿来，”医生说道，“不过这样做实在没有必要。”

iron是什么意思：
n. 铁；铁质；熨斗；刚强；毅力；铁头球杆
v. 烫平，熨
adj. 铁的，刚强的

The hot iron seared the trousers.
热熨斗烫焦了长裤。

Iron oxide red pigments
GB/T1863-1989氧化铁红颜料

Strike while the iron is hot.
打铁趁热。

searing是什么意思：
adj. 烤焦的；枯萎的
v. 使枯萎；烧焦

The hot iron seared the trousers.
热熨斗烫焦了长裤。

He found it in the sear catalog.
他在烤焦的目录里发现了它。

Then, with a Bunsen burner, the surface is thoroughly seared.
然后，用本生灯彻底烧灼表面。

soldering是什么意思：
[ solder ]的现在分词

To solder(two pieces of metal)together using a hard solder with a high melting point.
硬焊用高熔点的硬质焊锡将(两块金属)焊在一起

tinning the ends of the wires makes a better joint when you solder them.
当你焊接接口时，用锡焊很管用。