sign up ,sign

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sign up ,sign
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
跟…签订合同
They manage to sign up all the best performers.
他们设法跟所有最佳演员签订合同
sign in
通过签字(使)取得入场权
It is already five past eight but only ten office workers have signed in.
已经八点五分了, 只有十个办公人员签到。

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