black thread短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 黑线病 He tied off both ends of the oxbow with fine black thread, snipped them, and pushed them back under the skin. 他用细黑线系住 U形两端，再剪断它们，把它 们放回到皮肤下面。 yeeyan There the proprietress handed her a needle and a spool of black thread. 在那里，摊档老板交给她一口针头和一圈黑线。 focus