arm和arms,sands,cloth和clothes这些词到底是可数名词还是不可数名词?

arm和arms,sands,cloth和clothes这些词到底是可数名词还是不可数名词? there are arms,arm画线,对划线部分提问. sands和beach有什么区别呢 beaches和sands有什么区别 Without an arm I Without an arm I rest.with arms I rest. What are those ? A It is arm B lt is an arm C They are arm D They are arms cloth cloth cloth 和clothes的区别 flesh and bloodin the flesharm in armat arm's lengthin arms with open arms give one's right armtwist one's arm flesh and bloodin the flesharm in armat arm's lengthin arms with open arms give one's right armtwist one's arm beach sand 和sands的区别和联系? 战友的英语是 comrade-in-arms,它的复数形式是comrades-in-arms还是comrades-in-arm. sand和sands的区别大沙 还是 小沙? arms arm in arm 和 hand in hand 的意思是什么 cloth和clothes有什么区别 arm-linux-objdump -D -m arm led_elf > led.dis 特别那个arm和>符号