secondary
adj. 第二位的；次要的
eg. A distinction should be made between the primary and secondary tasks.
要區別主要的和次要的任務。

polaroid camera
波拉一步相機；即顯膠片照相機
eg. He had been fiddling with a new Polaroid camera.
他曾經擺弄過一個新的寶麗萊相機。

paperback
平裝本；紙面本
eg. There are paperback mysteries on the bookshelf.
書架上有平裝的神秘小說。

overflowing
adj. 溢出的；充滿的
eg. A great poem is a fountain forever overflowing with the waters of wisdom and delight.
一首偉大的詩篇有如一座噴泉永遠噴出智慧和歡愉的水花。

run its course
自然發展
eg. We can't cure the disease; it must run its course.
我們治不了這種疾病, 只好聽其自然。

sign off
停止活動
eg. You'd better sign off now or you'll miss the collection of the post.
你最好現在就將信收尾，不然會錯過郵遞員的收信時間。

anew
adv. 重新；再
eg. He played the tune anew.
他把那支曲子重新奏了一遍。