Ivas
(iva 的复数) Ideal Voltage Amplifier理想电压放大器；Inspection Visual Aid 检查用观察用具；Intra-Vehicular Activity （航天飞机）舱内活动
🗣️ 情景例句
He said they need a new book of photographs,
他说他公司需要一本新的摄影集，
When the tree is fallen, every one runs to it with his axe.
大树一倒下，人人持斧来。
'Where have you been hiding?' she asked impatiently.
“你躲到哪儿去了？”她不耐烦地问，