Letter · Frequency #3167
e
字母E
Letter and exact-case symbols
Spoken name: e. Scientific symbols are case-sensitive.
the letter E
Letter name · 字母名称the 5th letter of the English alphabet
英文字母 E（第 5 个字母）
Source: BridgeDict Latin alphabet catalog
the 5th letter of the Roman alphabet
- 1.
The name of the Latin script letter E/e.
拉丁字母E/e的名称。
- 2.
The grade below D in some grading systems. In most such systems, it is a failing grade.
某些评分系统中低于D的等级,通常为不及格
自然常数e；自然对数的底；拉丁字母E/e的名称。；某些评分系统中低于D的等级,通常为不及格；元件；部件
In use
In math class, we learned that e is approximately equal to 2.71828.
The number e appears in many formulas for growth and decay.
To calculate compound interest, you often need the value of e.
e + verb (e.g., equals, is)
数学中e是自然对数的底数，通常用作常数。
e equals approximately 2.71828.
e 约等于 2.71828。
the letter e
作为字母时通常小写。
The word 'apple' starts with the letter e.
单词 'apple' 以字母 e 开头。
the value of e
常出现在数学公式中。
The value of e is used in calculus.
Connections
Collocations
- the constant e
- 常数e
- The constant e is approximately 2.71828.常数e大约等于2.71828。
- the base e
- 底数e
- Logarithms with base e are called natural logarithms.以e为底的对数称为自然对数。
- the letter e
- 字母e
- The word 'example' starts with the letter e.单词'example'以字母e开头。
- e to the power of
- e的...次幂
- e to the power of zero equals one.e的0次幂等于1。
Synonyms
- Euler's number
- 欧拉数 · 在数学表达式中通常用符号e，而在说明性文本中可用Euler's number替换；不可与字母e混淆。
Confusing words
Learner notes
Memory Tip
自然对数的底e≈2.718，联想E字母发音'i:'，记作'二点七一八'。
Context & Register
通常用于数学和科学语境，表示自然对数的底数，多出现在公式和理论中。风格中性偏正式。
Grammar Note
E作为数学常数时不可数，作为字母时可数。
Pronunciation & Spelling
These words all rhyme with 'e' /iː/. Note that words like 'eye' are spelled similarly but sound different (/aɪ/).
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY, BridgeDict Latin alphabet catalog.