重點講解：
1. a series of 一連串；一系列；連續；接連；
A series of technical foul-ups delayed the launch of the new product.
一系列技術問題延誤了新產品的上市7F(H!V*X|gxiO0E4C~。
2. a variety of 各式各樣；多種多樣；
West Hampstead has a variety of good shops and supermarkets.
西漢普斯特德有各種各樣不錯的店鋪和超級市場UqqcXvOJ[x。
3. tip off 給…通風報信；暗中告知；
Greg tipped police off on his car phone about a suspect drunk driver.
格雷格用他的汽車電話向警方報告了一個有酒后駕駛嫌疑的司機SDiH11i(Xf6bxUk_X。
4. break down （使）（物質）分解；
The oil is attacked by naturally occurring microbes which break it down.
原油受到了自然產生的分解油類物質的微生物的侵蝕TZw.6JXAdmrL.16hH。