biased sample偏: inclined to one side; slanti ...性: nature; character; dispositi ...样本: sample book; specimen; advan ...代表性样本: representative sample全国性样本: cross-country samples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:偏性样本，即可在微信中查询翻译
