例句：The child sat on its mother' s lap, listening to an interestingstory.
小孩坐在媽媽的膝上，聽(tīng)一個(gè)有趣的故事。
lag n. 落后，遲延vi. 緩緩而行，滯后vt. 落后于
例句：You will lag behind unless you study harder.
你如不更加努力地學(xué)習(xí)就要掉隊(duì)。
overlap v. (與……)交疊，重合
例句：How many times a day does a clock' s hands overlap?
時(shí)鐘的指針一天內(nèi)會(huì)重合幾次?
clap n. 拍手聲，霹靂聲v. 鼓掌，輕拍
例句：Carmen gave me a clap on the back and invited me for a drink.
卡門(mén)在我背上拍了一下，請(qǐng)我去喝酒。
collapse n. 倒塌，崩潰，失敗vi. 倒塌，精費(fèi)，瓦解，失敗
例句：Having been deserted for years, the house collapsed.
這所房子因廢棄太久而倒塌了。
elapse n. (時(shí)間)過(guò)去，消逝v. 流逝
例句：Many years were to elapse before I saw my best friend in childhoodagain.
我再次見(jiàn)到兒時(shí)好友，已經(jīng)過(guò)去多年了。
flap n. 拍打，拍打聲，副翼v. 拍打，飄動(dòng)，扔，擲
例句：A flap from the tail of the huge whale upset the boat.
巨大的鯨魚(yú)的尾巴輕輕拍打便把小船打翻了。
slap vt. 拍，打，掌擊，拍擊n. 拍，掌擊，拍擊
例句：He gave Denny a slap on the cheek and Denny began to cry.
他打了丹尼一耳光，丹尼就哭起來(lái)了。
