Online Class Notes (Nemo)

Vocabulary

hike noun [C] (WALK)
a long walk, especially in the countryside
（尤指乡间的）远足，长途步行

altitude (n): height above sea level
海拔，海拔高度
We are currently flying at an altitude of 15,000 metres.
现在我们正在15000米的高度上飞行。
Mountain climbers use oxygen when they reach higher altitudes.
到了海拔较高的地方，登山者就要使用氧气。

altitude sicknes (n): breathing problems and dizziness as a result of having less oxygen to breathe in high areas, for example when climbing mountains
高空病，高山症

karst (n): an area of land formed of rock such as limestone that is worn away by water to make caves and other formations
喀斯特区，岩溶区
Some of the rocky karsts contain sea caves and hidden lagoons.
一些喀斯特区包含有海蚀洞穴和隐藏的泻湖。
a karst landscape
喀斯特地貌

refrain (v): to avoid doing or stop yourself from doing something
避免；忍住；节制
We refrained from talking until we knew that it was safe.
我们缄默不语，直到确定安全了才开始说话。
The sign on the wall said “Please refrain from smoking.”
墙上有个牌子，上写“请勿吸烟”。

lax (adj): not severe or strong enough
不严格的；不严厉的
He took a gun through baggage control to highlight the lax security.
他携带一把枪通过了行李检查，以此引起大家对安全管理松懈这一问题的重视。

flu (n): a common infectious illness that causes fever and headache
流行性感冒，流感
a flu virus
流感病毒
to catch/get/have (the) flu
患／染／得流感

side effect