* action
n. 行動，作用，活動
The time has come for action.
行動的時候到了。
a man of action
實干家
* act 1
v. 行為，舉止
It is an act of kindness/a kind act to help a blind man across the street.
幫助盲人過馬路是做好事。
* act 2
n. 法令，法律
an act of Parliament
議會法令
* active 1
a. 忙碌的，好活動的
She's over 80, but is still very active.
她 80 多了，但仍舊很活躍。
games for active youngsters
面向好動年輕人的游戲
* active 2
a. 積極的
He became politically active at college.
他上大學的時候開始在政治上積極起來。
The Bureau is active in promoting overseas investment.
該機構積極促進海外投資。
* activate
v. 使……活躍
Cooking fumes may activate the alarm.
烹調時的油煙可能會觸發警報器。
* transact
v. 做(交易)，辦理(業務)
Most deals are transacted over the phone.
大多數生意都是在電話里成交的。
* transaction
n. 交易，業務，買賣
The bank charges a fixed rate for each transaction.
銀行對每一筆業務都收取統一費用。
financial transactions
金融業務

* interact 1
v. 交流，交往
Lucy interacts well with other children in the class.
露西和班里的其他孩子相處得很好。
* interact 2
v. 相互作用
The immune system interacts with both the nervous system and the hormones.
免疫系統與神經系統及荷爾蒙相互影響。
* interaction 1
n. 相互影響
Price is determined through the interaction of demand and supply.
價格是通過供需消長而定的。
* interaction 2
n. 互相交流
the degree of interaction between teacher and student
師生之間交流的程度
* interactive
a. 交互的
interactive computer systems
交互式計算機系統
the museum's interactive exhibits
博物館的互動展品
* react
v. 回應，反應
Pinch me and I will react.
你要掐我我就有反應。
* reaction
n. 反應
the government's reaction to the fuel crisis
政府對燃料危機的反應