An attempt had been made to dig a tank in the garden, but the subsoil water proving too low, it had been abandoned, unfinished, with the excavated earth left piled up into a hillock.
我们曾尝试在花园里挖一个水池，但因地下水太过浅，只好放弃，没能完工，挖出来的土堆成了一个小山包。
2
A lot of tubes run through the water tank carrying chilled glycol, a fluid that freezes at a very low temperature - far below that of regular water.
水箱中有很多流淌着冷却用的乙二醇的管子。乙二醇液体的冰点的温度，远低于常规水的冰点。
3
When the Volt's lithium-ion battery runs low, an engine/generator seamlessly operates to extend the driving range another 300 miles (482km) on a full tank of fuel.