紧张

training up───训练，培养；充分训练

braining up───头脑清醒

striking up───使开始；建立起；开始演奏

stringing up───使兴奋；使敏感

staying up───不睡觉，熬夜

straightening up───好转；改正；清理

straining───n.应变，变形；v.拉紧；竭尽…的全力；使…损坏（strain的ing形式）

me thinking of some tied-up monster straining at its bonds, in front of whose gaping jaws we build our homes on the shore and watch it lashing its tail.───我想起某种试图挣脱束缚的困兽，我们在它的血盆大口之前建起家园，看着它愤怒地甩着尾巴。

India's power industry has been straining to keep up with the country's recent economic growth, and the expansion of power generation capacity has become a top priority.───印度的电力工业一直吃紧，已跟不上国家近期的经济增长，扩大发电能力已成为当务之急。

Not until I began to feel the horses straining up the steep ascent to our house did I open my eyes.