The weather alternates between sunshine and rain.

而天晴, 而下雨。

He's sort of poking the pigs and checking the flocks and herds.

他而戳戳猪 而安抚牛羊。

At times charged, at times languid.

而冲锋陷阵，而萎靡不振。

Constant volcanic and earthquake action occurs here, sometimes with cataclysmic results.

地区频繁的火山活动及地震而造成惨重的后果。

Everything must be done in its own time.

每件必须应而做！

He hums to himself, he growls out tunes, he waves his arms.

他而哼哼呀呀自言自语，而大声咆哮高歌，奋力地挥舞着臂膀。

If something waxed and waned, it grew stronger then weaker over time.

“wax and wane”，形容某随着间的推移，而变强，而变弱。

I get up at ten o'clock now and then.

我而在十点起床。

But his assistants could be ruthless in their quest to further Marsh's scientific ambitions.

但他的助理为了满足马许在科学上的野心，而会使用无情的手段。

But in the meantime, we try to live in harmony with our sometimes turbulent planet.

但与此同，我们试图与我们而动荡不安的星球和谐相处。

She could hear grief coming out of the ground, crying and screaming.

她听到了片土地上传来的悲鸣，而呜咽、而尖叫。

By turns philosophical and polemical, this is a provocative and fascinating book.

而富有哲理，而充满争议，是一本发人深省且引人入胜的书。

It was almost full of writing, mostly numbers, although sometimes there was a name.

笔记本差不多写满了，大多是数字，而有人名。

Miss Hill fluidly switched between rapping and singing.

希尔小姐而饶舌，而唱歌。

More likely, there are branches that split off, developed, and came back together at times.

更有可能的是，有一些分支分化、发展，而分裂，而又重新组合到一起。

For as the nimble flames towered, nodded, and swooped through the surrounding air.

因为那灵巧的火焰，在周围空气中而高升，而摇晃，而下落。

People can feel the wind is getting cool and see fogs in the morning sometimes.

人们可以感觉到风渐冷，而早上会见到雾。

The buffaloes marched along with a tranquil gait, uttering now and then deafening bellowings.

人们只好眼看着些被美国人错误地叫做" 水牛" 的反刍野兽不慌不忙地穿过铁路。它们一边走一边而发出惊人的吼声。

But on days he never left his screen, it was hard not to despair.

但在他从未离开过屏幕，而感到绝望也是情有可原。

Or " continuity" — objects don't just blink in and out of existence.

或“连续性”——物体不会而存在而不存在。