507. On the Christmas the Christian’s assistant fisted Pistol Piston and twisted his wrist.
在圣诞节，基督徒的助手拳击了“手枪活塞”并扭了他的手腕。
Christian [ˈkristʃən]
n.基督教徒 a.基督教(徒)的
fist [fist]
n.拳，拳头
– He was banging on the door with his fist. 他用拳头砸门。
pistol [ˈpistl]
n.手枪
piston [ˈpistən]
n.活塞
twist [twist]
v.缠绕；转动；捻；曲折前进 n.弯曲；转折
– I twisted round in my seat to speak to her. 我坐在位子上转过身来跟她说话。
wrist [rist]
n.腕，腕关节
508. My sister insists consistently on persistent resistance to transistor radios.
妹妹一贯坚决主张持久抵制晶体管收音机。
consistently [kənˈsistəntli]
ad.一致地；始终如一地
persistent [pəˈsistənt]
a.坚持不懈的，执意的；持续的
– His persistent questions finally goaded me into an angry reply/into replying angrily. 他三番五次地问问题惹得我回答时也没有好气。
resistance [riˈzistəns]
n.反抗，抵制；抵抗力(性)；阻力，电阻
– I catch colds frequently because my resistance is low. 我经常得感冒,因为我抵抗力差。
transistor [trænˈzistə, -ˈsistə]
n.晶体管，晶体管收音机
509. The chemist and the mistress insist that the mist consists of several chemicals.
化学家和女教师坚持认为薄雾由几种化学物品构成。
chemist [ˈkemist]
n.化学家；药剂师，药商
mistress [ˈmistris]
n.情妇；主妇，女主人
mist [mist]
n.薄雾 v.(使)蒙上薄雾，(使)模糊
– The hills were hidden in the mist. 群山消失在雾中。
consist [kənˈsist]
vi.(of)组成，构成；(in)在于，存在于
– Health does not consist with intemperance. 健康和酗酒不能相容。
chemical [ˈkemikəl]
a.化学的 n.化学制品