英国于1971年开始使用十进制的1便士和2便士硬币。In 1971, the 1p and 2p decimal coins were introduced in Britain.他懂得十进制的用法.He knows the decimal rules.古埃及数学以十进制为基础。The mathematics of ancient Egypt were based on a decimal system....
The miners tunnelled through the mountain to find coal.矿工在山里打通隧道找煤.The rescuers tunnelled their way ( in ) to the pot - holers.救援人员挖地道通向那些探察洞穴的人.They tunnelled along under the walls and up into the woods beyond.他们在围墙下面挖地...