The cumulus cloud to the left shows a less remarkable virga shaft , but here the rain doesn 't make it all the way to the ground .
左面的积雨云则表示了一个不太明显幡状云的轴线，然而这里的雨水，并非自始至终都能使幡状云降落到地面。
China 's refined-copper imports soared 99 % in february from a year ago , perhaps indicating that ' they want to have the material available ' when infrastructure projects start , says catherine virga , a researcher at commodities research firm cpm group .
