遭受了三次手术以及多次辐射检查，Shaw说她已经成功瞒过了自己的儿子。
Through three surgeries and multiple rounds of radiation, Shaw says she successfully hid her cancer from her son.
对于早产婴儿，尽可能少的辐射暴露特别重要，因为他们可能需要多次辐射检查像发育不全的呼吸系统这样的问题。
In premature infants, minimizing radiation exposure is especially important because they may require multiple radiological exams for problems like underdeveloped respiratory systems.
这大概是400多次人类辐射试验中的首例试验。
That was just the first of over 400 human radiation experiments.
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