These firms are regarded as the engineroom of the economy.
这些公司据信对经济有重大影响力。
《柯林斯英汉双解大词典》
2
A very severe explosion can damage the crankcase door and cause fire in the engineroom.
非常剧烈的爆炸会损坏曲轴箱防爆门,引起机仓着火。
3
Along with Andres Iniesta he makes up the superb engineroom for club and country, connecting the dots between those around him with his infallible short passes.