Gb	Eng
别向后看，不然你会摔跤的。	Don't look behind or you may fall.
孩子们在河边玩耍, 突然其中一个滑了一跤跌进河里.	The children were playing by the river when one of them slipped and fell in.
他跌了一跤, 头部撞在栏杆上了.	He tripped and bashed his head against the railing.