tocut method顶部: top; upper apex; top half; h ...开挖: excavate; working法: law开挖法: excavation method撑板开挖法: poling board method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:顶部开挖法，即可在微信中查询翻译
