an explosive mine hidden underground; explodes when stepped on or driven over
同义词:land mine??/??ground-emplaced mine
an unforeseen or unexpected or surprising difficulty
同义词:pitfall
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。