前进：按下fwd键，传送带前进，上方绿色指示灯亮。
Forward: Press FWD key, conveyor forward, the top of the green indicator light.
youdao
比利︰嘿！扣好！安全带指示灯刚亮。
Billy: Hey! Buckle up! The seat belt sign just went on.
应用推荐
模块上移
模块下移
不移动