Thee particles are much too small to be seen with the naked eye but have been detected using a type of x-ray that is especially good at picking up trace amounts of metals and minerals.
这种树叶中含有的黄金粒子十分微小，不足以凭肉眼观察到，但是科学家们通过一种专门探查微量金属和矿物的X射线仪器发现了它们。
Thee particles are much too small to be seen with the naked eye but have been detected using a type of x-ray that is especially good at picking up trace amounts of metals and minerals.
这种树叶中含有的黄金粒子十分微小，不足以凭肉眼观察到，但是科学家们通过一种专门探查微量金属和矿物的X射线仪器发现了它们。
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