动 （上下牙齿磨碎食物） masticate，chew，munch；

[例句] 牛排老得嚼不动，豌豆像子弹一样硬。 The steak was tough and the peas were like bullets.

[例句] 丹尼尔倚在沙发上，嘴里还在嚼着苹果。 Daniel leaned back on the sofa, still chewing on his apple.