"he couldn't suppress his contemptuous accent"
"she had a very clear speech pattern"
"the red light gave the central figure increased emphasis"
"the room was decorated in shades of grey with distinctive red accents"
"the immigrants spoke an odd dialect of English"
"he has a strong German accent"
"it has been said that a language is a dialect with an army and navy"
"he put the stress on the wrong syllable"
"Dr. Jones emphasizes exercise in addition to a change in diet"
"In Farsi, you accent the last syllable of each word"
He speaks English with an American accent.
他说英语有种美国的腔调。
He speaks English with an accent.
His English is slightly accented, but perfectly idiomatic.