chase rainbows做白日梦

Chasing rainbows won't get you anywhere.

sail close to the wind冒险

If you believe what he said， you are sailing close to the wind.

know which way the wind blows了解情况

He never tells his thoughts until he knows which way the wind blows.

be snowed down工作太多做不过来

I've been snowed down by my work！

white as snow纯洁无辜

The accused didn't commit the murder，he is as white as snow.

Red sky at night,sailor’sdelight.Red sky in the morning,sailor take waring.早霞不出门，晚霞行千里。

Halo around the sun or moon ,rain or snowsoon.日晕三更雨，月晕午时风。

When the stars begin to huddle ,the earth will soon become a puddle.月明星稀。

When ladybugs swarm,expect a day that’s warm.蚂蚁搬家，天将雨。

If bees stay at home,rain will soon they fiy away ,fine will be the day.蜜蜂迟归，雨来风吹。