Sunlight consists of different wavelengths of radiation.

　　陽光由波長(zhǎng)不同的射線組成。

　　She was possessed of exceptional powers of concentration.

　　她有高超的專注能力。

　　It was week five of my tour of the major cities of Europe.

　　這是我在歐洲主要城市旅行的第5周。