单词:radioactivities
[化] 放射性
n the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
单词:radioactivities 相关文章
I really like doing vocabulary activities. I think they are a great way for us to learn vocabulary. My teacher always gives us vocab activities that are like games. They are great fun and Im sure that helps us remember the words and phrases. He makes
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The week-long National Day holiday is due to start in one day's time. What are your travel plans? Many people nowadays prefer to take part in outdoor activities, such as mountain climbing, outdoor camping and drifting. Many of these intrepid explorer
It only takes a few seconds of the original 1943 'English by Radio' theme tune and I'm dreaming about 1940s Britain. Crackly violin melodies build to a strong, confident finale, reassuring the listeners that we are safe in the hands of the BBC. Now,