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synthetic fiber; synthetic fibre; chemical fiber; chemical fibre
化繊のシャツは乾きやすくて旅行に便利だと思う。
I think synthetic fiber shirts dry easily and are convenient for travel.
肌が敏感な人は化繊より天然素材を選ぶ傾向がある。
People with sensitive skin tend to choose natural materials over synthetics.
化繊は静電気が起きやすいという欠点があるよね。
A drawback of synthetic fibers is that they easily generate static electricity.