If you plant the seeds outside when the weather is cool, place the seeds under a glass.

VOA: special.2009.04.21

and when we run in Boston, we have to train in the really, really cold weather.

在波士顿的时候，我们在冒着严寒训练。

在马拉松认识的朋友 - SpeakingMax英语口语达人

When the weather is warm, put them into five-liter pots and place them outside.

VOA: special.2009.04.21

Do this when the weather is not too hot and not too cold.

VOA: special.2009.04.28

Scientists say the presence of iron in the rock shows that the weather was hot and dry when the rock was first formed.

VOA: special.2009.04.15

Most climbers make the trip in late April and May when weather conditions are the least severe.

VOA: special.2010.06.30

When bad weather prevented navigators from seeing the sun,moon or stars, they had to use a method called "dead reckoning" to find the ship's position.

VOA: special.2009.12.23

India's Civil Aviation Minister has said the weather and visibility were good, and there were no apparent signs of trouble when the flight landed.

VOA: standard.2010.05.23

Risley says the challenges remain daunting, although there are hopes the fighting may be over before winter, when the refugees' needs will increase sharply, and weather hampers aid deliveries.

VOA: standard.2009.06.19