Hydrogen is a very light gas that can help balloons fly high in the sky.

氢是一种非常轻的体，可以帮助天空中飞得很高。

The naked tree stood stark against the winter sky, its branches bare and exposed.

光秃秃的树冬日天空的映衬下显得格外突兀，树枝光秃秃地露外面。

The planet glows brightly against the dark night sky.

这颗行星黑暗的夜空中明亮地发光。

The bright orange balloon contrasts sharply against the dark stormy sky.

明亮的橙色阴暗的暴风雨天空中形成鲜明对比。

The geese migrate south across the golden sunset sky.

雁群金色的夕阳下向南迁徙。

The light grey sky was a very neutral color before the rain.

下雨前，浅灰色的天空是一种非常中性的颜色。

Children play on the freshly cut lawn under a bright summer sky.

孩子们阳光明媚的夏日蓝天下，新修剪的草坪上玩耍。

The sky appeared a very neutral color before the rain.

下雨前，天空呈现一种非常中性的颜色。

A massive sandstorm sweeps across the desert, turning the sky into a swirling sea of brown.

一场巨大的沙尘暴席卷沙漠，把天空变成了翻滚的棕色海洋。

The balloons dissolved high in the sky.

高空中渐渐消失。

The sky began to lighten after the storm.

暴风雨后天空开始放晴。

The wintry sun was already low in the sky.

一轮冬日已经低垂天幕。

For an ambitious young woman in this business, the sky’s the limit.

对于一个做这一行的雄心勃勃的年轻女士来说，发展的前景无可限量。

The sky darkled at the approaching storm.

风暴来临前天空渐渐暗了下来。

The sky clouded over before the storm.

暴风雨来临前, 天空乌云密布。

The sky clouded over; we could see there was going to be rainstorm.

"天空乌云密布,我们看得出快来暴风雨了。"

The sun shone on for hours in a cloudless sky.

天放晴了几个小时。

Only a tiny patch of blue was visible in the cloudy sky.

多云的天空中只见到一小块儿湛蓝。

Her voice was as overwarm as if she were coaxing a sky child.

她的声音过分亲切，像是哄害羞的孩子。

A copter appeared in the sky above them.

一架直升机出现他们上空。