adj.1.无脊骨的。2.没骨气[勇气]的,优柔寡断的。3.【生物学】无刺的。adv.-ly ,-ness n.have no backbone; a spineless person: 没骨头spineless common jujube: 无刺枣spineless stream-toad: 无棘溪蟾spinel-type structure: 尖晶石型结构spinel(spinelle): 尖晶石下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:spineless,即可在微信中查询翻译