xīn lǐ xué jiā / tōng guò / guān chá / wēi biǎo qíng / lái / pàn duàn / duì fāng / shì fǒu / zài / shuō huǎng心理学家通过观察微表情来判断对方是否在说谎。Psychologists judge whether a person is lying by observing microexpressions.