Doctors don't know what causes chronic fatigue syndrome, characterized by debilitating fatigue and chronic pain with symptoms that can wax and wane over time.
医生们不知道慢性疲劳综合症的致病原因。该病的特征是使人虚弱无力的疲倦、慢性疼痛，症状的轻重则可能随时间变化。
Over time however, AOL's influence seemed to wane as more people signed up for broadband connections, which offered more direct access to E-mail and Web surfing.
随着时间的推移，美国在线的影响力似乎在不断减弱，更多的人转而采用宽带网络，实现更加直接的电子邮件访问和网上冲浪。
By measuring changes in the light reflected from the clouds, they found that the clouds appear to wax and wane in prevalence over a 27-day cycle.
通过测量夜光云反射的光的变化，他们发现夜光云从盛到衰的周期大约为27天。
Over time however, AOL's influence seemed to wane as more people signed up for broadband connections, which offered more direct access toe-mail and Web surfing.
随着时间的推移，美国在线的影响力似乎在不断减弱，更多的人转而采用宽带网络，实现更加直接的电子邮件访问和网上冲浪。
Tyrande Whisperwind: You realize that we will age as these mortals do. Our powers over nature will wane in time.
泰兰德·风语者：这样一来我们将像凡人一样变老。我们的超自然力量也迟早会消逝。
You realize that we will age as these mortals do. Our powers over nature will wane in time.
你了解到这会让我们如这些普通人一样开始老化，还有我们来自大自然的力量也会随著时间而消弱吗？
残留的月光，衰微，衰微！
残留的月光，衰微，衰微！
应用推荐