1.
What are the hardest words to pronounce in English?
英文最难发音的字是哪些字呢？
2.
She taught us how to pronounce those difficult words.
她教我们如何发这些难字的音。
3.
This is a difficult word to pronounce.
这是个难读音的字。
4.
(of a letter) written but not pronounced
（指字母）不发音的
5.
I find it hard to get my tongue round these Polish names.
我发现很难把这些波兰名字音发准确。
6.
pronounce(a letter)with a trill
用颤音发（某字母）的音
7.
a letter of the alphabet standing for a spoken vowel.
字母表里代表元音发音的字母。
8.
a letter of the alphabet standing for a spoken consonant.
字母表代表辅音发音的字母。
9.
an alphabet of characters intended to represent specific sounds of speech.
表现发音细节的字母表。
10.
The red letters are silent.
红色的字母不发音。
11.
The green letters are silent.
绿色的字母是不发音，
12.
The letter "e" in "mouse" is mute.
"mouse"中的字母"e"不发音。
13.
Any of the speech sounds represented by the letter e.
E的发音字母e所表示的读音
14.
sibilant letter or speech-sound,eg/s,z,F,V,tF,dV/
发嘶音的字母或语音（如 /s/,/z/,/f/,/V/,/tF/,/dv/
15.
The study of the pronunciation of words.
正音学对于字词发音的研究
16.
a phonetic transcription
用音标 [发音符号] 所拼写的文字
17.
Letters of the alphaBet represent sounds.
字母表中的字母意指发音
18.
The word 'hour' is pronounced without an initial aspirate.
hour一字的开头字母h不发送气音。