萨拉脸上没有头发，而是用小发夹将头发扎在脑后
Sarah's hair was out of her face and held back by a hair slide.
方法设计有小发夹结构的两条DNA序列。
Methods Two DNA sequences containing small hairpin structure were designed and synthesized.
第三张照片是她扶着一把木椅，这次她穿了一件乳白色的毛衫，毛衫下是蓝色的小裙子，头上还戴了一支蓝丝带小发夹。
A third photograph shows her leaning on a wooden chair, this time wearing a cream cardigan over a blue dress with a blue ribbon clip in her hair.
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