dilemma
n. 困境;進退兩難
eg. So the real dilemma lies not in what handset you choose, but which network you opt for.
所以真正的困境不在于你選擇什么手機,而在于你選擇什么網絡。
Celsius
adj. 攝氏的
eg. When water is cooled below 0 degrees Celsius, it freezes and becomes ice.
水冷卻到0攝氏度以下時, 會凍結成冰。
equilibrium
n. 均衡
eg. He can't maintain enough equilibrium to ride a bike.
他騎自行車不能保持平衡