say goodbye to: 和...說再見
Say goodbye to your colleagues and thank them for covering your butt while you ’ re away.
和你的同事說再見，謝謝他們在你不在時頂替你的工作。
Did you say goodbye to molly?
你跟molly說再見了嗎？

take for granted: 認為理所當然
We now take for granted that science gives us otherwise invisible worlds.
現在，我們都想當然地認為科學帶給我們不一樣的隱藏的世界。
Don't take for granted what you have.
不要認為你所擁有的是理所當然的。

take the place of: 取代
Meanwhile customers are flocking to all flavors of the kindle as e-books rapidly take the place of bound books.
與此同時，隨著電子書迅速取代紙質書，消費者們正在紛紛購買各種型號的Kindle。