531. prevent…from 使…不, 防止…做

530. prevail over 占优势, 压倒, 战胜

529. preside over / at 主持(会议,业务等)

528. for the present(=for the time being, for now)暂且,就现在来说; at present现在,此刻

527. in the presence of 在…在场的情况下

526. prepare for breakfast 准备吃早饭 prepare breakfast 作早饭

525. prefer…to… (choose rather, like better) 宁要, 更喜欢

524. bring(put)…into practice使…成为现实

523. be(get) out of practice 荒疏,不熟练

522. in practice 实际上(状语);业务熟练(表语)