1. Silver is a tarnishable metal, so it requires regular polishing to maintain its shine.
银属于容易失去光泽的金属，因此需要定期擦拭以保持其光亮。
2. The fabric used for this dress is tarnishable, so it is recommended to avoid exposure to direct sunlight.
这件连衣裙的面料容易褪色，建议避免直接阳光曝晒。