?ext是英語單詞extension的縮寫形式，讀音為/kst/。

用法：

1. 名詞，延伸、擴展或增加。

2. 動詞，表示延長、擴大或增加。

例句：

1. The deadline for this project has been extended to next week.

這個項目的截止日期已經(jīng)延長到下周。

2. The company plans to extend its business to overseas markets.

公司計劃將業(yè)務拓展到海外市場。

同義詞及用法：

1. prolong：指延長某一時間段或期限。

2. expand：指增大范圍、規(guī)模或數(shù)量。

3. increase：指數(shù)量、程度、力度等的增加。

4. enlarge：指使變得更大或更廣闊。

5. lengthen：指使變得更長。

例句：

1. The meeting was prolonged due to a heated discussion.

由于激烈的討論，被延長了。

2. The company plans to expand its product line in the coming year.

公司計劃在明年擴大產品線。

3. The government has announced an increase in taxes.

宣布將增加稅收。

4. They decided to enlarge their house by adding an extra room.

他們決定通過增加一間房間來擴大自己的房子。

5. The road construction project will lengthen the journey time by 30 minutes.

這個道路建設項目將使旅程時間延長30分鐘。