半橡筋腰头加绳带作松紧的调节。
医用口罩用的橡筋条，质量好，环保。
Medical use of rubber masks of good quality, environmentally friendly.
我拿一个小椅子坐在花洒的前面，正解着头上的橡筋。
I get a small chair to sit in front of the shower, is the head of the rubber band solution.
自由飞模型制作起来相对便宜，尤其是采用橡筋动力。
Free flight models are relatively cheap to build, especially if you go for rubber power.
自由飞模型制作起来相对便宜，尤其是采用橡筋动力。
Free flight models are relatively cheap to build, especially if you go for rubber power.
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