prolong

prolong 延长

pro-,向前，long,长的。引申词义延长。

prolong (v.)

early 15c., back-formation from prolongation or else from Old French prolonguer, porloignier (13c.), from Late Latin prolongare "to prolong, extend," from Latin pro- "forth" (see pro-) + longus "long" (adj.); see long (adj.). Related: Prolonged; prolonging; prolongable.

1. A long drawn out war would likely deepen and prolong the recession.

一场旷日持久的战争很可能会使衰退程度加剧，时间延长。

2. The operation could prolong his life by two or three years.

这次手术可使他多活两三年。

3. He has decided to prolong his visit through the weekend.

他已决定把他的访问延长到过完周末.

4. Doctors commented that some patients deliberately prolong their treatment.

医生说有些病人故意延长治疗时间.

5. The defendant feigns illness to prolong the trial.

为了拖延审判，被告装病。

【suspend, defer, postpone, prolong, delay, put off】
这组词都有“推延，延期”的意思，其区别是：
suspend: 指暂时中断以待某种条件的实现。
defer: 正式用词，语气强于postpone，多指故意拖延。
postpone: 正式用词，语气较强，多指有安排的延期，常指明延期到一定的时间。
prolong: 指把时间延长至超过正常或通常的限度。
delay: 普通用词，多指因外界原因推迟或耽误，也可指有意推迟。
put off: 口语用词，与postpone同义，但较通俗。

【enlarge, extend, stretch, prolong, inflate, expand, increase, multiply, lengthen, add, augment, amplify】
enlarge: 放大（照片）
extend: 使…（在空间或时间上）更大，更长；伸长，伸展，延展；舒展（肢体），extend sth
stretch: vt 拉长，撑大；绵延，延续
prolong: 人为的延长时间
inflate: 使（轮胎、气球等）充气，膨胀，inflate sth (with sth)
expand: 使…变大，扩大，扩展，expand sth into sth
increase: 增加，增大（数目、数量、体积等），increase sth from…to…
multiply: 成倍的增加
lengthen: 指自然的延长时间或空间
add: 加，添加，add sth to sth
augment: vt 增多，增大，augment sth
amplify: 特指音量，电流等的扩大