This is a hose pumping water at 10 teragrams a year.
这是一根每年抽水 10 太克的软管。
英语百科
Kilogram
The kilogram or kilogramme (SI unit symbol: kg), is the base unit of mass in the International System of Units (SI) (the Metric system) and is defined as being equal to the mass of the International Prototype of the Kilogram (IPK, also known as "La Grande K" or "Big K").