要是的英文：
if

It’s spoiling for a hurricane, if you ask me.
要是你问我的意见，我认为飓风马上就来。

Soccer is primarily a winter game.
英式足球主要是冬季运动。

Thermal electricity (mainly coal –fired electricity)
火电(主要是煤电)

If there's any food(left)over,put it in the fridge.
食物要是剩下就放进冰箱里.

Supposing(that)it rains,can we play the match indoors?
要是下雨的话,我们在室内比赛行吗

If you're naughty, mother will spank you.
你要是调皮，妈妈会打你屁股的。

If it should rain tomorrow, the sports meeting would Be postponed.
要是明天下雨，比赛就延期举行。

Arc-shaped Mountain Ranges, including the Himalayas and Tainwan Mountains.
弧形山脉:主要是喜马拉雅山、台湾山地等。

If you add too many notes to the text, the reader won't be able to see the wood for the trees.
要是给正文加注过多，读者就觉得喧宾夺主了。

Turbidity is predominantly made by colloids
浊度主要是由胶体物质造成的。