1) as precious as gold
像金子一样贵重
2) Gold is a rare metal.
金子是贵重金属。
3) Noble Metal and Heavy Metal Ions
贵重金属离子
1.
Study of Thiacalixarene Separation/Preconcentration and Determination of Trace Noble Metal and Heavy Metal Ions with Flame Atomic Absorption Spectrometry;
硫杂杯芳烃分离富集—火焰原子吸收光谱法测定贵重金属离子的研究
4) as harmless as a dove
像鸽子一样温和
5) As soft as the sand.
像沙子一样柔软。
6) as mischievous as a monkey
像猴子一样淘气
补充资料：走私贵重金属罪
走私贵重金属罪：指走私国家禁止出口的黄金、白银和其他贵重金属的行为。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条