In colder climates, lakes and rivers freeze in the winter. Water becomes ice at the surface. But, it is not always thick enough to support a person’s weight. If the ice is thin, it could break, and a person would fall into freezing water. If a person makes a poor decision, it might be appropriate to tell them ‘I think you’re on thin ice’.
如履薄冰
在寒冷氣候，冬天時湖面或河面上通常會結冰. 水可能會結成一層冰在表面上，但並不總是厚到足以支撐一個人的體重. 如果那層冰很薄，那就很有可能會破裂，人就可能會掉進去極冷的水裡。如果一個人做了一個很冒險的決定，那麼你就可以對他說”我認為你現在的情況是如履薄冰”