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He imagined he had got into a needle-case full of pointed needles of every size.
他觉得自己进入了一个装满了大小不一的尖针的针盒。
youdao
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EUS aspiration needle size: smaller is better?
超神内镜活检针的尺寸：越小越好吗？
youdao
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EUS aspiration needle size: smaller is better?
超神内镜活检针的尺寸：越小越好吗？
youdao