obstacle  朗读 obstacle

音标：ɒbstəkəl

obstacle翻译

obstacle双语用法和例句

相关单词

oviparous overstock overdo ornithology oar oniony ozoniferous oolong obtect orthopedic opodeldoc obviously ocker odelsting onlooker osteosarcoma orangutan oink osteometry opinionative

中文词源

英文词源