凹: 凹名词(凹陷的地方, 用于地名) low-lying area; depression (used in place names) 短语和例子核桃凹 hetaowa (in shanxi province)
折: 折动词[口语]1.(翻转) roll over; turn over 短语和例子折跟头 turn somersault; 折过儿 turn over; 折来折去 roll about2.(倒过来倒过去) pour back and forth between two containers 短语和例子开水太烫, 拿两个杯子折一折就凉了。 the water's boiling
