It's outside my field.
それは専門外だ
It's partially my fault.
それはある程度私の責任だ
It's past a joke now.
冗談を超えている
It's peculiar that ....
…とは奇妙だ
it's pointless to do [doing]
…するのは無意味だ
It's pouring (((英))with) rain.
どしゃ降りである
It's quite distinct from the smell of burning.
それは焦げているにおいとはまったく違う
It's raining hard this morning, isn't it?
今朝は雨がひどく降っていますよね
It's raining.
雨だ
It's rather dull, I should say.
それはいささか退屈ですよ
