当刺激出现时，婴儿吮吸行为的变化被记录下来。
As stimuli were presented, changes in the infant's sucking behavior were recorded.
当新的刺激出现时，心脏和呼吸监测仪为研究者提供其心跳或呼吸的次数。
Heart and respiration monitors provide the investigator with the number of heartbeats or breaths taken when a new stimulus is presented.
当不同的生态系统出现时，我们可以这样解释：不同的生态系统形成的部分原因是岛屿形成过程的结果。
When varied ecosystems are present, they can be explained as resulting in part from the process that formed the islands.
该弃儿被人们发现时安然无恙。
4个人的尸体被发现时布满了枪眼。
他再次出现时，他正将步枪瞄准维德。
他以往的丑行被发现时，人们感到震惊。
当合适的女人出现时，这场噩梦就会结束了。
When the right woman comes along, this bad dream will be over.
现时没有空位，但我会把你列入等候者名单的。
There are no places available right now but I'll put you on a waiting list.
现时天气变化无常。
每当新的反抗苗头出现时，政府就迅速将其扑灭。
Every time a new flicker of resistance appeared, the government snuffed it out.
他们刚出现时，似乎没有恶意。
当领导出现时，她走上前来，把自己准备的花递给他。
When the leader appeared, she came up and handed him the flowers she prepared.
八年前，当点点在芦苇丛中被发现时，她的情况如何？
How was Diandian when she was found in the reeds eight years ago?
当他们突然出现时，家人和邻居看到他们都很惊讶，但很高兴发现他们还活着。
When they suddenly appear, the family and neighbors are surprised to see them, but very pleased to find that they are alive.
在特定的时间和地点，当月虹恰巧出现时，如果你就在那里，千万不要错过它。
At a certain time and a certain place, when a moonbow happens to appear, you can't miss it if you're right there.
当我的朋友终于出现时，我把伞给了一位怀抱婴儿的女士，她刚到接送区。
When my friend finally showed up, I gave the umbrella to a lady carrying a baby who just arrived at the pickup area.
当新的参与者出现时，会发生什么呢？
英雄出现时人们向他欢呼。
当她的晚餐同伴出现时，她拉了把椅子。
它们在天空里时现时隐。
当他想要的那个出现时，他还是把它扔掉了。
所以当这被第一次发现时，人们简直不敢相信。
So when this was first found, people literally would not believe it.
我的龟掉到一个散热器的后面，发现时已经太晚了。
My turtle fell behind a radiator and was not discovered until too late.
当问题出现时，你可以自己处理，而不用请专业人员。
When a problem appears, you can deal with it yourself without paying a professional.
当你发现一些奇怪的想法出现时，最好不要压制它们。
It is better that when you find some strange ideas appear, you are not squashing them.
当贫穷出现时，即使是淘气的孩子也能理解它的含义。
When poverty shows itself, even mischievous boys understand what it means.
然而，当新事物出现时，我们往往连它的名字都不知道。
Yet, when something new turns up, more often than not, we do not even know its name.
当问题出现时，我们需要批判性地思考来决定如何解决它。
When a problem comes our way, we need to think critically to decide how to solve it.
当人类首次作为一个物种出现时，他们依旧跟多种类人猿共存。
When humans first emerged as a species, they shared the planet with many types of ape.
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