Walk straight on until you see the traffic lights(改为同义句)
Walk straight when you see the traffic lights
这里的when意思是“当……的时候”与until“直到”含义大抵相同
Walk straight on until you see the traffic lights(改为同义句)
Walk straight when you see the traffic lights
这里的when意思是“当……的时候”与until“直到”含义大抵相同