口活差 英语怎么说

"口活差"是指一个人的口语能力较差。在英文中，可以用 "poor speaking skills" 来表示这个意思。
例句：
John has poor speaking skills, so he often stumbles over his words when he talks.
Mary is a great speaker, but her brother has poor speaking skills and gets tongue-tied easily.
这个说法可能来自比喻，因为每个人都有两只嘴唇，所以 "口活" 就像是一个人的 "双唇活动"，而 "差" 则表示这个人的口语能力较差。