Rayl
n. [物]瑞利(比聲阻抗的單位)
??? 情景例句
Yes, I think I can in ordinary circumstances.
是的，一般情況下，我沒有問題。
Reason is the guide and light of life.
理智是人生的響導和光輝。
Yes, it is.It's very urgent.I feel awful. I have a terrible toothache.
是的，很急。我難受極了，牙痛得要命。