a person who is in poor health cannot handle sth so strong as a tonic
false but apparently real
modest and studious (idiom)
(coll.) all show and no substance
an excess of heat caused by a deficiency in Yin energy (idiom)
交换虚电路交換虛電路 1.Switched Virtual Circuit2.SVC
永久虚电路永久虛電路 1.Permanent Virtual Circuit2.PVC
虚拟专用网络虛擬專用網絡 virtual private network (VPN)
虚拟私人网络虛擬私人網絡 virtual private network (VPN)
虚拟现实置标语言虛擬現實置標語言 virtual reality markup language (VRML) (computing)
耳听为虚，眼见为实耳聽為虛，眼見為實, (idiom) what one hears may be unreliable, but what one sees is true; seeing is believing
虚心使人进步，骄傲使人落后虛心使人進步，驕傲使人落後, modesty leads to progress, arrogance makes you fall behind (quote of Mao Zedong)
眼见为实，耳听为虚眼見為實，耳聽為虛, see 耳聽為虛，耳听为虚，眼见为实[ěr tīng wéi xū yǎn jiàn wéi shí]