simple expansion engine单: singular number fate; destin ...胀: expand; dilate; inflate汽机: steam engine; steam turbine三胀汽机: triple expansion engine四胀汽机: quadruple-expansion engine下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:单胀汽机，即可在微信中查询翻译
