The lighthouse beam was quite distinct in the gathering dusk.

灯塔的光柱在渐暗的黄昏中相当清楚。

《柯林斯英汉双解大词典》

At the same time, destructiveness test by loading on simple supporting prestressing concrete beam and gathering work of the vibration signal were carried on.

同时对预应力混凝土简支梁进行了破坏性加载试验和振动信号采集工作。

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