ONE PHRASE, IN CONTEXT
watch out
当心;留神

GET TO KNOW THE MEANING
同一个表达,不同的语境。
01当心;留神
IN A SENTENCE
Watch out for the wet paint by the stairs; it hasn't dried yet.
小心楼梯旁边的湿油漆,还没干呢。
02小心;当心
IN A SENTENCE
Watch out when you cross the courtyard because delivery bikes often pass through without slowing down.
穿过院子时要小心,因为送货自行车经常不减速就驶过。
