Experiments have also cast serious doubt on the belief that yawning is triggered by a drop in blood oxygen or a rise in blood carbon dioxide.
对于打哈欠是由血液中的氧气减少或血液中的二氧化碳增加引起的这种观点，一些实验也同样提出了严重的质疑。
A drop in interest rates gave a welcome fillip to the housing market.
降低利率给房屋市场带来利好刺激。
Would you drop in at my house this afternoon if it is convenient to you?
如果方便的话，你今天下午可以顺便去趟我家吗？
Online shopping for the holiday season remained just a drop in the ocean of the estimated US$450 billion spent by US consumers.
在美国消费者估计花费的4500亿美元中，假日网购只是沧海一粟。
A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.
新屋销售激增和每周失业救济人数下降表明，经济可能不像一些分析师此前预期的那样疲软。
His fee is a drop in the ocean compared with the real cost of broadcasting.
他的费用与广播的实际成本相比是沧海一粟。
The 20 dollars is a drop in the bucket.
这20美元只是杯水车薪。
It can generate 194 megawatts of electric power, but that's just a drop in the bucket.
它可以产生194兆瓦的电力，但那只是沧海一粟。
While it's possible bike-sharing will cause a drop in business, Crooks allowed that the idea is a positive step forward for New York City.
虽然共享单车可能会导致业务下滑，但克鲁克斯认为，这一想法对纽约市来说是向前迈出的积极一步。
I thought I'd drop in on you while I was passing.
我曾想路过时顺便来看看你。
To avoid this drop in learning, it's up to parents to encourage continued learning during the summer.
为了避免这种学习下降，父母应该鼓励孩子在暑假继续学习。
I'll drop in on you when I have time.
有空我来看你。
The strength of an individual, as compared with that of the masses, is but a drop in the ocean.
个人的力量和群众的力量相比，不过是沧海一粟。
Please stop by (drop in) sometime.
请于近日过来坐坐。
But these villages are just a drop in the bucket.
但这两个村庄只是沧海一粟。
Next time you are in Guangzhou, please drop in on me.
下次来广州请一定来看我。
Please drop in at my office when you happen to be free.
如果你碰巧有空的话，请到我的办公室来。
"Half a percent is a drop in the ocean to be honest," he said.
他说：“半个百分点只不过是杯水车薪而已。”
Tell your friends to drop in for a glass of wine or a cup of tea.
告诉朋友们来家喝杯葡萄酒或喝杯茶。
But while such support as Wang Zhi's is vital, it is a drop in the ocean.
王志们的援手固然重要，但这仅是杯水车薪。
Egypt has shown a remarkable drop in child mortality from 235 to 33 per 1000 in 30 years.
埃及经过30年的努力，儿童死亡率从235/1000，大幅降至33/1000。
For polio eradication, we have been encouraged by a 95% drop in cases in India and Nigeria.
在消灭脊髓灰质炎方面，印度和尼日利亚的病例减少了95%，令我们受到鼓舞。
The latest report also shows there has been a significant drop in the number of new HIV infections.
最新的报告同时也显示新发艾滋病病毒感染人数有明显的下降。
The latest report also shows there has been a significant drop in the number of new HIV infections.
最新的报告同时也显示新发艾滋病病毒感染人数有明显的下降。
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