7码阶梯式超级倍投法简介：The environment here seems very quiet, no one is making any noise, and occasionally a strange "squeaking" sound can be heard next to the computer, which is the dialing sound of the "modem" for dial-up Internet access.
The environment here seems very quiet, no one is making any noise, and occasionally a strange "squeaking" sound can be heard next to the computer, which is the dialing sound of the "modem" for dial-up Internet access.
