单词：constant
a. 不变的, 一定的, 时常的
[计] 常量; 常数; 恒值
n. a number representing a quantity assumed to have a fixed value in a specified mathematical context
a. steadfast in purpose or devotion or affection
考试类型：[高考/四级/六级/考研/托福/IELTS/GRE]
constant的用法和样例：
例句
- In our world nothing seems constant.在我们这个世界上似乎没有东西是永恒不变的。
- The birth rate in this city is almost constant.这城市的出生率几乎是不变的。
- The machinery requires constant maintenance.这些机器需要经常保养维修。
- The constant friction between the young couple finally caused divorce.小夫妻俩之间经常的冲突终于导致了离婚。
- The speed of light is an important constant.光速是一个重要的常数。
- The size can be set only as a constant.大小只能被设置为常数。
- This quantity is called the universal gas constant.这个量叫做普适气体恒量。
常见句型
- Keep the chemicals at a constant temperature.把这些化学用品保持在恒温中。
- Her constant nagging drives me crazy.她不停地唠叨使我发狂。
- The seeing eye dog was the blind man's constant companion.导盲犬是盲人的忠实伙伴。
- In our world nothing seems constant.在我们这个世界上，似乎没有东西是永恒不变的。
- In history, change is constant.在历史上变化是不断的。
- He alone remained constant.只有他一个人忠贞不渝。
- They were constant in friendship.他们之间的友谊永恒。
- He is constant to his friend.他忠于朋友。
词汇搭配
- constant friend忠实的朋友
- constant nagging不停地唠叨
- constant temperature恒温
- be constant in〔to〕 friendship对友谊忠贞
经典引文
The best-resolved of men, The constantest.
出自：Milton
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