The day should be mainly dry with sunny intervals.
白天大部分時間應無雨，間有陽光。
The forecast said there would be sunny intervals and showers.
預報間晴，有陣雨。
There will be rain at first, with sunny spells later.
開始會有雨，雨后間晴。
Elsewhere, the weather today has been fairly sunny.
今天其他地方的天氣都比較晴朗。
It will be hard to work today ─ specially when it's so warm and sunny outside.
今天無心工作——尤其是外面這樣風和日麗。