lock in phrasal verbphr v a) KEEP somebody IN A PLACE lock somebody in (something) to prevent someone from leaving a room or building by locking the door 把某人锁在（某处）里面 She locked herself in. 她把自己锁在屋里。
They locked the director in his office. 他们把董事锁在他自己的办公室里。
b) lock something ↔ in to do something so that a price, offer, agreement etc cannot be changed 锁定〔价格、报价、协议等〕，使…不变 Sell your stocks now to lock in some of the gains of recent months. 现在卖出你的股票以锁定这几个月来的部分收益。
c) lock something ↔ in to make the taste, liquid etc remain in something 锁住〔味道、水分等〕 This method of cooking locks in the flavour of the meat. 用这种方法烹制可以保持肉的原味不变。
lock in• Some families are locked in a cycle of poverty.
→ lock in at lock1(PHRASAL VERB)