drip
vi. vt.滴下 n.滴水声
Water drips from my ceiling during rainstorms.
下大雨时，水从我家天花板上滴下来。
Jane didn't sleep well last night because of the endless drip of the rain from the roof.
因为屋顶上不停传来的滴水声,小珍昨晚一夜没睡好。
journey
n.旅行（尤指长途旅行） vi.旅行
Peter has decided to go on a journey to southern Taiwan next month.
彼得已决定下个月到南台湾旅游。
I journeyed to Japan last summer and had a fantastic time there.=I took a trip to Japan last summer and had a great time there.=I traveled to Japan last summer and had a wonderful time there.
去年夏天我到日本旅游，在那儿我玩得很愉快。
client
n.客户
We can't afford to lose Mr. Johnson. He's a very important client of ours.
我们万不能失去强森先生。他可是我们非常重要的客户。
precious
a.珍贵的
Time is precious, and we cannot afford to waste it.
时间很宝贵，我们浪费不起。
jet
n.喷射机
Mr. Stevenson is so rich that he even has his own jet.
史帝文森先生很有钱，甚至拥有自己的喷射机。
mystery
n.神秘，神秘难解的事物
The reasons behind Dr. Todd's murder have remained a mystery for many years.
陶德医师命案的犯罪动机多年来一直成谜。
riddle
n.谜
Mary solved the riddle before Sam did.
玛丽比山姆先猜出谜底。
tremble
vi.颤抖
Lori began to tremble with fear when she saw the big dog.
萝莉看到这只大狗时，开始害怕地直发抖。
mankind
n.人类（前面不加冠词）
Television is one of the most popular inventions in the history of mankind.
电视是人类史上最普及的发明之一。
humankind
n.人类
All humankind will benefit from the scientist's discovery.
该科学家的发现将使全体人类获益。