老杆是一种焰火，过节的时候把许多爆竹（主要是二踢脚）绑到架子上进行燃放。
白体镶黑边的老款打字机的键盘向使用者发出邀请，请他们演奏强有力的协奏曲，同时银色的打印杆一升一降，嗒嗒作响。
On older models the keys, metal-rimmed with white inlay, invited the user to play forceful concertos on them, while the silvery type-bars rose and fell chittering and whispering from their beds.
秀丽隐杆线虫的特性使其成为了一种研究大量疾病及生物学过程的有效工具，可以研究的内容可包括帕金森病，早老性痴呆，以及衰老过程。
The properties of Caenorhabditis elegans make it useful for studying a wide variety of diseases and biological processes, including Parkinson's disease, Alzheimer's disease and ageing.
这些现代建筑材料的流畅型线条与布满铜绿的老线杆相映成趣。
This contemporary construction material gives a nice contrast of sleek lines to the patina of the old timber.
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