Only gravity and a phenomenon called the weak nuclear force, which governs some types of radioactive decay, can bind them—hence the term “weakly interacting”.

只有重力和一种可以支配某些放射性衰变的弱核力能够使其聚集凝固，“弱反应”这一术语由此得名。

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In young children, teeth that have recently emerged have weak enamel and are highly susceptible to acid decay.

最近表明，小孩子的牙釉质极易受酸侵蚀。

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In young children, teeth that have recently emerged have weak enamel and are highly susceptible to acid decay.

最近表明，小孩子的牙釉质极易受酸侵蚀。

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