1. degradation [,degrə'deiʃən]
n. 降格,堕落,退化
degradation:退化|降解|降级
uv degradation:紫外线退化
Soil degradation:土壤退化|土壤退化作用|土壤破坏
2. elapse [i'læps]
v. 逝去,过去
elapse:(光阴)逝去,溜走|逝去|逝去 ，流逝
elapse vt.:(时间)流逝
elapse vi.:(时间)过去，消逝
3. prior to
adv.在前, 居先
Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
4.
