node已裝好，npm -v也正常顯示版本號(hào)；npm install -g create-react-app這一步?jīng)]有問(wèn)題；使用create-react-app myapp時(shí)，一直顯示“There appears to be trouble with your network connection. Retrying...”這是什么原因呢？網(wǎng)絡(luò)是沒(méi)有問(wèn)題的，能正常上網(wǎng)