Crouch step thread palm 仆步穿掌
step-thread-pitch 步进螺距
step thread
一步的线程
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The next step was to thread a tiny surgical balloon and a thin stainless-steel stent into the artery to forcibly widen the passage.
CNN: Just How Bad Was It?
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