no base value for sonic minesweeping值: price; value本底值: background values◇本底值监测 background value monitoring有底值: base value无底的: abysmal; abyssal; bottomless/unfathomable; unfathomable无底点: nadir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:无底值，即可在微信中查询翻译
