【词组解析】
1. on reserve 不出借、为某些人保留
Additional reference texts were put on reserve at MIT's libraries.
额外参考书目则收藏于麻省理工学院的图书馆。
拓展：put on reserve 被限制在馆内阅读、预留
         book on reserve 须留的图书

2. booked up 订完了 
（1）The theatre is booked up for every evening this week except Tuesday.
       除星期二外,本周每晚戏票预订一空。
（2）I'm sorry. The hotel is booked up.
      对不起, 客房已被预订光了。

3. bound for 开往 
（1）He stowed away on a ship bound for Vigo.
       他偷偷地上了一艘开往维哥的船。
（2）Where are you bound for?
      君将何之?
相关解析：bound
              vi. 跳，弹跳； 限制； 接壤 
              vt. 给…划界，限制； 使弹回，使跳跃； 束缚 
               n. 界限，限制； 跃起； （球等的）反跳 
             adj. 用带子绑住的； 有义务的； 装订的，有封面的； [化，物]结合的

4. break down 失败；划分（以便分析）；损坏；衰弱下来；抛锚
（1）The police tried to break down the prisoner's opposition.
       警察设法制住了那个囚犯的反抗。
（2）The machine must break down at this busy hour.
       正忙的时候机器偏偏坏了。

5. break through 突围，突破；猛涨；攻破
（1）This very successful effort did not result from break through of technology.
       这种具大的成果并不来源于工艺上的突破。
（2）We attempted to break through the lines of the enemy.
       我们企图突破敌人的封锁线。

【练习】
英译中
（1）Registry offices and churches have been booked up for months.
（2）He put her aboard a steamer bound for New York.
（3）Under millions of feet, ancient stones wear out, ancient floors break down.
（4）It was quite some time before they break through the enemy's blockade.