act out

To perform in or as if in a play; dramatize

在行動中實現，付諸行動

act out a story.

連說帶比劃地講將故事

wanted to act out his theory.

想在行動中實踐他的理論

To express (unconscious impulses, for example) in an overt manner without awareness or understanding.

沖動行事：不知不覺中公開地表示（例如，無意識的沖動）

act up

To misbehave.

行為不良

To malfunction.

發生故障

&I{Informal} To become active or troublesome after a period of quiescence

【非正式用語】 疾病發作：一段時間的平靜之后變得活躍或令人討厭

My left knee acts up in damp weather. Her arthritis is acting up again.

我的左膝一到陰濕天氣就犯病。她的關節炎又犯了

act of God

an instance of uncontrollable natural forces in operation (often used in insurance claims)

[常用于保險索賠]不可抗力

act of grace

a privilege or concession that cannot be claimed as a right

恩典，大赦令

catch someone in the act

(一般作 be caught in the act)surprise someone in the process of doing something wrong

當場抓住（或發現）某人做壞事

the thieves were caught in the act.

竊賊們被當場抓住。

clean up one's act

behave in a more acceptable manner

改進舉止

get one's act together

(informal)galvanize oneself into organizing one's life or affairs effectively

(非正式)（使自己的生活處事）有頭緒；有條有理地行事

get (或 be) in on the act

(informal)become or be involved in a particular activity, in order to gain profit or advantage

(非正式)（為獲得利益或有利條件而）加入（或參與）（活動），插一手

a hard (或 tough) act to follow

an achievement or performance which sets a standard regarded as being hard for others to measure up to

難以取得的成就（或成績）

in the act of

in the process of

在…過程中

they photographed him in the act of reading other people's mail.

他們拍下了他私看他人信件的行為過程。

be in on the act

To be included in an activity.

參與：參加行動

clean up (one's) act&I{【俚語】}

To improve one's behavior or performance.

改進舉止：改進某人的舉止或表現

get into the act

To insert oneself into an ongoing activity, project, or situation.

加入，參與：中途加入到進行中的活動、項目或形勢

get (one's) act together&I{【俚語】}

To get organized.

組織起來，有頭緒