This is the 5143rd most frequent Chinese word.
lo
In Chinese, "lo" (啰) is a particle used to add emphasis or express affirmation, often conveying an informal or conversational tone.
The word '哎哟' is used as a mild interjection expressing surprise or admiration.
哎哟，这条河真宽！
Oh, this river is so wide!
The word '了' in the sentence is a particle indicating the completion of an action or a change of state.
他被大雨淋湿了，赶紧回家换衣服。
He was soaked by the heavy rain and hurried home to change clothes.
The word '来了' here combines '来' which means 'come' and '了' indicating completion of the action.