The word "snowfall" is a word formed by joining two separate words, i.e. "snow" and "fall." This newly formed word is generally regarded as a c____. 正确答案 第一空： compound The four sounds /p/,/b/,/m/ and /w/ have one feature in common, i.e, they are all b____sounds. 正确答案 第一空： bilabial The transcription of speech sounds with letter-symbols only is called broad transcription while the transcription with letter-symbols together with the diacritics is called n____transcription. 正确答案 第一空： narrow A____refers to a strong puff of air stream in the production of speech sounds. 正确答案 第一空： aspiration