oh my!; goodness!; well, well!
Casual interjection expressing surprise, often with a slightly amused or ironic tone. A contraction of これはまた.
Oh my, that's a lot of snow!
こりゃまた、珍しいお客さんだ。
Well, well, a rare visitor!
Contraction of これはまた (kore wa mata), literally 'this is again', used as an exclamation of surprise.