声波在一种介质中顺畅地传播，突然触及了不同的介质，这时会发生什么？
You've got a sound wave traveling merrily along through one medium, when suddenly it hits a different medium, what does gonna happen then?
这时，汤姆开始在写字板上潦草地写着什么，用手挡住不让那姑娘看见。
Now Tom began to scrawl something on the slate, hiding the words from the girl.
她刚从大学毕业，在一家广告公司找到了一份工作，这时她开始感到她身体里正在发生什么奇怪的事情。
She has just graduated from college and got a job at an advertising agency when she began to sense that something strange was going on inside her body.
今天天气很好，斯特拉·比安奇带着两个孩子在公园里享受阳光，这时一个大约四岁的小男孩走近她两岁的儿子，把他推倒在地。
It was a lovely day at the park and Stella Bianchi was enjoying the sunshine with her two children when a young boy, aged about four, approached her two-year-old son and pushed him to the ground.
我和哥哥正在挖雪，这时火车的消防员走到窗户边对我们喊道：“你们两个为什么在挖雪？”
My brother and I were digging around in the snow when the train's fireman came to the window and shouted to us, "Why are you boys digging in the snow?"
在第三和第四阶段（通常称为“深度睡眠”），这时唤醒一个人是很难的。
During stages three and four (often called "deep sleep") , it is very hard to wake up a person.
我们被太阳照得两眼发花，耳边就像有震天响的钹声，这时候在阴凉的房间里喝上一大杯冰镇绿薄荷水，是何等惬意。
How cool was the welcome of a tall glass of iced green mint in the shady room, to heads ringing with colors and the cymbals of the sun.
就在这时，凯特的父亲出现了，解释说道格在梦游。
Just then, Cait's father appeared and explained Doug was sleepwalking.
就在这时，马里奥想起了妈妈的话：“你在烹饪方面很有天赋。”
Just then Mario remembered his mother's words: "You are talented in cooking."
这时，伟大的钢琴大师出现了，他迅速走到钢琴旁，在男孩的耳边低声说：“不要停下来。继续弹。”
At the moment, the great piano master appeared, moved to the piano quickly, and whispered in the boy's ear, "Don't stop. Keep playing."
但是直到15世纪，铅条也在创新设计中发挥了作用，到这时它才被放到窗户里，作为设计的一部分。
But up to the fifteenth century, the lead strips also helped create the design—they were worked into the window as part of the composition.
只有这时他们才能希望在残酷的季节到来时幸存下来。
Only then can they hope to survive the cruel season to come.
这时，我们唱起歌，在厨房地板上轻轻地跳舞
步骤3：这时，您可能需要考虑在MQT上定义索引。
Step 3: At this point you may want to consider defining indexes on the MQT.
这时，我就知道找到了在多字节整数格式中需要的字节数。
When this happens, I know that I have found the required number of bytes in the multi-byte integer format.
这时他决定寻找在干血dna范围内的蓝眼睛变异的人。
He then got the idea of looking for the blue eyes mutation within the dried blood's DNA.
这时您可能会注意到在PB A应用程序项目中存在一个错误。
You may notice at this point that there is an error in the PBA application project.
正如情侣在分离时说的一样：当你读到这时，我已经不在了。
As lovers leaving lovers say, By the time you read this, I'll be gone.
可这时女管家却一个劲地在门外徘徊，提篮也紧闭着。
But the housekeeper lingered by the door, and the basket stayed shut.
这时，他看到在山的另一侧，顺坡而下有一行马蹄印。
Then he saw the marks going down the other side of the mountain.
只有这时才能说在一个组织中成功的采用了过程。
Only then will a process be successfully adopted within an organization.
杰克和泰瑞在医院的走廊等候，这时，他的电话铃声响起。
Jack and Teri are in the hospital hallway when his phone rings.
这时在英国，查尔斯·达尔文及其进化论正忙于铲除伊甸园传说的影响。
Back in England, Charles Darwin and his theory of evolution were busily uprooting the Garden of Eden.
这时核聚变将在恒星表面发生，而不再是其在核心了。
Instead of fusion taking place in the stellar core, it fizzles towards the surface.
一位老人开车行驶在高速公路上，这时车载电话响了。
As an old man was driving down the freeway, his car phone rang.
这时，过来一名警察。问他在干嘛。
你再次深呼吸，这时在火焰中开始浮现出一个画面来。
You take another deep breath and a scene begins to emerge within the flames.
与在示例应用程序中所做的一样，还要在这时关闭文档对象。
We will also close the document object here as we are done with our sample application.
与在示例应用程序中所做的一样，还要在这时关闭文档对象。
We will also close the document object here as we are done with our sample application.
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