单词:beta rays spectrum
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[00:14.07]The World Trade Organization(WTO) and China [00:18.34]As China has been admitted [00:22.06]to the World Trade Organization (WTO), [00:24.90]it is very apt at this time [00:27.42]to compile some important data [00:29.60]about this internatio
[00:09.70]I'd like to welcome Tyler Prince, 让我们欢迎泰勒普林斯 [00:12.06]president of Beta Omega Rho fraternity. Beta Omega Rho兄弟会的会长 [00:19.10]Hey, everyone. 大家好 [00:26.30]I've asked Tyler to come today to talk about a
I have a 45, it's 45 plus High SPF, high protection, right? En, not exactly. That SPF number indicates protection from burning UVB rays, but says nothing about blocking UVA rays which can cause wrinkle, sunspots, and cancer. Rules proposed today wou
Who says Santa Claus has to be white? Until now, your iPhone's emoji keyboard did. 谁说圣诞老人一定要是白脸的?现在,你的苹果表情键盘可以实现这一转变。 A new beta release of iOS 8.3, currently available only to softw
As summer approaches we all enjoy outdoor activities. But with sunlight becoming more intense we should protect our skin from harmful direct exposure to the sun. 随着夏日的到来,我们都喜欢进行一些户外运动。但因为日照愈加强