The scientists stress that the technique has only been validated for 19th- and 20th-century canvases with no synthetic fibers.

科学家强调，这项技术只适合分析没有合成纤维的19到20世纪的作品。

Okay, her hair is synthetic fiber.

好吧，她的头发是合成纤维的。

Nylon was a synthetic fiber prized for its strength and its sheerness.

尼龙是一种合成纤维，因其强度和透明度而备受推崇。

As for how to stiffen roads? Gregory says you could mix small amounts of synthetic fibers or carbon nanotubes into paving materials.

至于如何硬化道路？格雷戈里表示，可以将少量的合成纤维或碳纳米管混入铺路材料中。

It tore the people's clothes made of artificial fibers or synthetic fibers.

它撕碎人们用人造纤维或合成纤维做的衣服。

Gregory says you could mix small amounts of synthetic fibers or carbon nanotubes into paving materials.

格雷戈里说，你可以将少量合成纤维或碳纳米管混合到铺路材料中。

33.And check what you're wearing, If you're wearing something with synthetic fibers what that really means is that it's made of petroleum!

再看看你身上穿的衣服，如果你穿着含有合成纤维的衣服的话，这意味着它是由石油做成的。

In the 1940s, the synthetic fiber nylon replaced silk in stockings, and it was so durable that the products became an overnight sensation.

20 世纪 40 年代，合成纤维尼龙取代了丝袜中的丝绸，而且其耐用性使得产品一夜之间就风靡一时。

STEP 3 Lay bra flat to dry. Never stuff your bra in the dryer. Delicate fabrics like lace or silk won't hold up and synthetic fibers will lose their shape and elasticity.

把内衣放平晾干。千万不要把内衣放入烘干机。蕾丝或丝绸等精细的布料难以承受热度，合成纤维会变形或失去弹性。

Nasopharyngeal and oropharyngeal swab specimens were collected with synthetic fiber swabs; each swab was inserted into a separate sterile tube containing 2 to 3 ml of viral transport medium.

鼻咽和口咽拭子标本采用合成纤维拭子采集； 每个拭子被插入一个单独的无菌试管中， 试管中装有 2 至 3 毫升的病毒转运培养基。