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- Chemical element is the general term for the same type of atoms with the same mass number. 化学元素是具有相同核电荷数的同一类原子的总称。
- Any of two or more nuclei with the same mass number and atomic number that have different radioactive properties and can exist in any of several energy states for a measurable period of time. 同质异能素两种或更多种具有相同的质子数和原子数，但有不同的辐射特性并能在几种能量状态中的任一种里存在一段可测量时间的原子核中
- A cloud is a mass of vapor in the sky. 云是天空中的水汽团。
- The mass rally was a total fiasco. 那次群众集会彻底失败。
- He thumbed through the directory to look for her number. 他翻阅电话号码簿找寻她的号码。
- Let me note down your address and telephone number. 让我记下你的地址和电话号码。
- Let's collect the sap before its consolidation into a hard mass. 让我们在树液坚固成团之前将之收集起来。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
- After harvest we will have a mass of rice. 秋收后，我们将获得大量稻谷。
- The number of fish in coastal waters has decreased. 沿海鱼的数量已减少了。
- She says she doesn't like children in the mass. 她说从总体上讲她不喜欢孩子。
- The number represented by the digit or digits in2. 在释文2。中所说的由一位或几位数字表示的数。
- The students in our class number thirty. 我班总共有三十名学生。
- I dialed the right number, but nobody answered. 我拨的号是对的，但没有人接电话。
- A number of new hats were on parade at the wedding. 在婚礼上见到有些人戴著新式的帽子。
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The number shall be cut in on a plate. 号码将雕刻在一块金属板上。
- Soon the car will go into mass production. 这种小汽车不久即可投入批量生产。
- I found a mass of spawn in the fish before cooking. 烧鱼前，我发现鱼里有很多鱼籽。
- I seriously question a number of your assertions. 对你所坚持的说法，有几点我甚为怀疑。
