比较一下 = let's compare
比较 难 = quite hard
比较 容易 = quite easy
比较 麻烦 = quite troublesome
查 词典 = check in the dictionary
查 问题 = check the question / trouble
查 身体 = check the body
谈话 = talk, speak
谈 得 怎么样 = how to speak (means how to discuss)
谈了 多长 时间 = talked for how long
谈完了 = finished talking