subject to 的 subject 没有变形,所以这个 subject 是形容词,它的读音是ˈsʌbdʒɪkt,subject to是指「可能受到…影响」(likely to be affected by something, especially something bad),一般都是不好的影响,可以是人为因素或无法控制的天然因素,而且所指的事还未发生,所以是一种假设或预测,例如: More @Wikipedia
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