When there is a full moon, this nocturnal rodent is careful to stay in its burrow.
在有满月出现的时候，这种夜间出没的啮齿类动物小心地呆在它的洞里。
When there is a flight, you have to be quick to get on it, and you can't be too far away.
有航班时，你必须迅速登机，而且你不能离得太远。
She agreed that Xu could travel for three months every year, when there was less farm work.
她同意徐每年在农活比较少的时候去旅行三个月。
When there was no more pork at the 1885 fair, the Menches brothers used minced beef instead.
1885年的集市上没有猪肉了，曼彻斯兄弟用碎牛肉代替。
When there are several different assignments, make sure they begin with one they enjoy, so it seems easy to get started.
当有几项不同的作业时，确保他们从自己喜欢的作业开始，这样看起来似乎更容易上手。
It is known that when there are many of these flowers together, their strong smell will make anyone breathing it fall asleep, even sleep forever.
众所周知，当这些花大量聚集在一起，任何闻到它们强烈气味的人都会入睡，甚至是永远入睡。
It snowed the day before — giving a strange feeling at a time of year when there is virtually no darkness — but on Sunday the sun blazed across the water.
前一天下了雪——在一年中几乎没有黑暗的时候，会有一种奇怪的感觉——但周日，太阳照耀着湖面。
He found that strongty-lateralised individuals were able to feed twice as fast as wealdy-lateralised ones when there was a threat of a predator looming above them.
他发现，当掠食者的威胁逼近时，强侧化个体的进食速度是弱侧化个体的两倍。
Although Sue took longer to complete her projects than John and both were equally successful on the assignments they completed, Sue was given the first promotion when there came a vacancy.
尽管苏比约翰花了更长时间完成项目，而且两人完成的任务都很成功，但当有职位空缺时，苏得到了第一次升职。
We had reached the point when there was no money left.
我们曾落到身无分文的地步。
The pictures belong to an era when there was a preoccupation with high society.
这些图片源于上层社会占据主流的时代。
He is equivocating a lot about what is going to happen if and when there are elections.
他含含糊糊地说着很多如果进行选举会发生的状况。
Their strategy is expansionist and imperialist, and it is greatest in effect, of course, when there is no countervailing power.
他们的战略是扩张主义的和帝国主义的，当然，它在没有抗衡力量的时候就会达到最大效果。
Keep cool when there is a problem.
出现问题时要保持冷静。
When there has been plenty of rain, the grass is green.
雨水充足时，草地是绿色的。
Some trees make clicking noises when there is not enough water.
当水分不足时，一些树会发出咔哒声。
Small cuts can be more serious when there is no doctor nearby.
如果附近没有医生，小伤口可能会更严重。
When there is enough "green energy", Ant Financial will plant a real tree.
当“绿色能量”足够多时，蚂蚁金服将种植一棵真正的树。
To begin with, people may feel stressed when there is something important to do.
首先，当有重要的事情要做时，人们可能会感到有压力。
When there is a fire in a building, get away as fast as you can.
当建筑物着火时，要尽快离开。
The only problem I have is when there are too many kids who want to join.
唯一的问题是有太多的孩子想加入。
The exhibition shows that a rich imagination is very important when there are only poor materials.
这次展览表明，在只有贫乏的材料的情况下，丰富的想象力是非常重要的。
When there is a new family member—for example, a new baby—don't forget to add him or her to the family tree.
当有了一个新的家庭成员——例如，一个新生的婴儿——不要忘记把他或她添加到家谱中。
When there was no place in the whole field left to dig, the rabbit dug a tunnel to right under where the dog was lying all that time.
当整个田地里没有地方可挖时，兔子就在狗一直躺着的地方下面挖了一条隧道。
Don't cry wolf when there is no wolf!
没有狼来不要喊狼来了！
We must call the firemen when there is a fire.
发生火灾时，我们必须给消防员打电话。
My dad would only go shopping when there was nothing in the fridge.
我爸爸只有在冰箱里什么都没有的时候才会去购物。
When there is the occasional rain, the clay ground becomes extremely slippery.
偶尔下雨时，粘土地面就会变得非常滑。
It's great because we play cards or just sit around and talk when there are no customers.
太好了，因为没有客户的时候我们会打牌或坐成一圈聊天。
It's great because we play cards or just sit around and talk when there are no customers.
太好了，因为没有客户的时候我们会打牌或坐成一圈聊天。
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