talkative

My talkative neighbor kept me in the hallway for an hour telling me about her vacation.

(Chinese) 我那健谈的邻居在走廊里拉着我讲了一个小时她的假期。

The classroom becomes very talkative once the teacher leaves the room for a break.

(Chinese) 老师离开教室休息时，教室里就变得非常嘈杂。