?爆击试验
... Engine knocking 引擎爆震 knocking test 爆击试验 knocking down 压槽 ...
In every test so far of activist opinion, the small minority which does the work of stuffing envelopes and knocking on doors has backed Mr Duncan Smith.
ECONOMIST: Tory leadership
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。