sign up ,sign

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sign up
sign up[简明英汉词典]
跟…签订合同
sign up
vb
to enlist or cause to enlist,as for military service
sign in
sign in[简明英汉词典]
通过签字(使)取得入场权
sign in
签到,签收
【计】注册
【计】登录
sign in
vb
to sign or cause to sign a register,as at a hotel,club,etc

sign up ,sign sign up sign sign up 是什么意思啊? maplestory sign up problem sign up 什么意思 sign up for sign up for $1 sign in 和 sign up 的区别 sign up 和 sign up for 的区别 sign up for trees for sign an agreement.end up .