Once this happens, blood appears in the vomit and faeces.
一旦出现此种症状，呕吐物和粪便中就会带血。
Once this happens the coral is deprived of energy and dies.
这种情况一旦发生，珊瑚就会失去能量，进而死亡。
Once this happens, you take one monkey out of the cage and bring in a new one.
一旦发生这种事，你就把一只猴子从笼子里放出来并放入一只新的猴子。
Once this happens, you have an organ in your body that maintains and anchors your entire immune system.
一旦这发生了，你们具有身体里的维持和锚定整个免疫系统的一器官。
Once this happens the site is abandoned and the soil is exposed to sun and rain, resulting in erosion and further impoverishment of the soil.
如果土地就撂荒了，土壤直接暴露中日晒雨淋中，导致水土流失和土壤进一步贫瘠。
Once this happens, organizations are on a path to self-destruction, creating in their wake enormous harm for employees and shareholders alike.
一旦出现这种状况，企业就走上了自我毁灭之路，将给员工和股东等造成莫大的伤害。
Once this happens, the 6.1 type library can be used for 64-bit VBA applications and for programs that don't have to run on older operating systems.
一旦发布，开发者就可以使用6.1类型库来编写64位的VBA应用程序，也可以使用它来编写不需要运行在旧操作系统中的程序。
Once this happens, the only way to improve the performance of Wife 1.0 is to purchase additional software. I recommend Flowers 2.1 and Diamonds 5.0!
一旦发生这种情况，改进1.0版太太运行表现的办法是买些额外的软件，我推荐2.1版鲜花和5.0版钻石！
Once that happens at year's end, you won't have this wonderful paring of energies again until 2022.
当这种情况在年末发生时，直到2022年之前你都不会再有这样的好机会。
Anyway, as I was saying, making this particular drink, which happens to be a vodka gimlet, is simplicity itself, once you know how.
不管了，像我刚说的，要调制这种独有的饮品——碰巧还是伏特加螺丝起子——本身没什么复杂的，一旦你会做你就知道了。
Or I have once been to a party and I found my shirt was misaligned, seriously misaligned, not one button but — Anyway, so — and so I feel when this happens I'm very immature.
或者有一次我去参加聚会，我发现我的衬衫扣错了，扣得很错，不只是扣错一粒纽扣，发生这种事时，我觉得太没面子了。
This happens about once or twice a year, on the average, but not each month since the Moon's orbit around the Earth is slightly tilted.
这种情况每年平均发生一两次，不是每月都发生，因为月球绕地球公转的轨道稍稍有点斜。
This is what happens when our system of growth and the system of nature hit the wall at once.
当人口增长系统和自然系统相冲突的时候，这种情况就会产生。
The last two years' data suggest temperatures are once more beginning to rise; but how fast this happens depends on a number of factors.
过去两年的数据显示，气温又开始上升了；但是变化有多快要取决于多种因素。
The child is quite black, only it has white PAWS, but with that exception, it has not a single white hair on its whole body; this only happens once every few years, you will let me go, won't you?
这个孩子除了爪子是白色的，浑身黑黝黝的，连一根白毛都没有。这是好几年才会碰上的事情，你当然会同意我去的，是吗？
Microsoft will release a security update for this issue and once that happens, get it quickly installed.
微软将很快发布相应的安全补丁。
Once in the street, Gates bellowed, “This is what happens to a black man in America.”
一走到街上，盖茨就大叫起来：“在美国就是这样对待黑人的。”
No matter when and where what happens, I will remember, in this a certain corner of the world, a once and I together adventure, as strong you.
无论何时何地发生什么，我都会记得，在这个世界的某个角落，有个曾和我一起冒险，一样坚强的你。
While this illegal activity was once commonplace, it happens less frequently now, owing to active policing by the Federal Securities and Exchange Commission.
虽然这种非法活动过去相当普遍，但现在由于联邦证券交易委员会的积极管制，这类活动少多了。
If this happens more than once, STOP and remind yourself that this isn't the first time you've had this reaction.
如果这不止一次地发生，停下，提醒自己，这不是第一次你有这个反应。
INTERESTING FACT ABOUT August 2010. This August has 5 Sundays, 5 Mondays, 5 Tuesdays, all in one month. It happens once in 823 years.
关于2010年8月有趣的事实。这个八月里有5个周日，5个周一和5个周二，它823年才发生一次。
This happens whenever the eclipses travel back to Capricorn and Cancer, which happens once every nine years.
这每九年会发生一次，每当星蚀走回到魔羯或巨蟹时。
'This usually only happens once in a life time. Isn't this reason enough to lavish and celebrate?'
这事（结婚）通常是一辈子仅此一次。难道这还不够理由让我们为之不做保留，好好地庆祝一番吗？
Once this phenomenon happens, it would cause irremedied loss to the students, to the parents, and even to the recruit units.
这种情况一经发生，对考生本人、考生的家长，乃至对招生单位而言，都可能造成一定的损失。
The child is quite black, only it has white PAWS, but with that exception, it has not a single white hair on its whole body, this only happens once every few years, you will let me go, won't you.
这个孩子除了爪子是白色的，浑身黑黝黝的，连一根白毛都没有。这是好几年才会碰上的事情，你当然会同意我去的，是吗？
This year, July has 5 Fridays, 5 Saturdays and 5 Sundays. This happens once every 823 years.
今年七月有5个星期五、5个星期六和5个星期日。这种月历，823年才有一次。
This year, July has 5 Fridays, 5 Saturdays and 5 Sundays. This happens once every 823 years.
今年七月有5个星期五、5个星期六和5个星期日。这种月历，823年才有一次。
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