IR是什么意思

[化] 红外光谱法
[医] 铱(77号原素)

n a heavy brittle metalpc element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
n a board of the British government that administers and collects major direct taxes

IR的用法和例句：

1.Which I'm sure has all been reported to the IRs.

那我想肯定都申報給稅務局了吧

2.So I was surprised as anybody when the IRs came knocking.

所以国税局找上门的时候我和大家一样吃惊

3.There should be an IR lasso visible right now.

现在应该能看到红外线激光束