1.gritted his teeth
紧咬着牙关
仿She gritted her teeth and plunged into the cold sea.
2.prattle
vi. 闲聊；胡说；小孩般说话
n. 无聊话；咿咿呀呀声
vt. 天真地说
比较级 prattled
最高级 prattled
仿Don't prattle about our theory. We must practise it and prove it.
3.Summary
Harry reluctantly went to Lockhart's office. He heard a cold and malicious voice in Lockhart's silly chat, but Lockhart did not hear it.
