at grade intersectionat-grade intersectiongrade crossinggrade ercrossinglevel crossingplain intersection公路平面交叉: highway grade crossing环形平面交叉: roundabout平面交叉信号: level crossing signal〔美国〕(铁道、公路等的)平面交叉。: grade crossing〔英国〕(道路)平面交叉点,道口,岔口。: level crossing下载手机词典可随时随地查词查翻译