Four new TGV high-speed rail lines will be under construction at the same time.

四条新的TGV高铁同时也会开工。

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To improve the efficiency of construction at the same time, also ensure the quality of construction.

在提高施工效率的同时，还要保证施工质量。

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It is often the case that more than one ship are under construction at the same time, which inevitably encounters all kinds of resource conflicts.

在船舶制造企业中多艘船舶同时建造的情况时常出现，在多船的建造过程中不可避免的会遇到各种资源冲突问题。

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Now, that -- the same construction crew would upgrade all the homes on the same block at the same time.

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At the same time, residential construction companies have decreased the amount they spend, relative to sales, on advertising and payroll, Sageworks data shows.

FORBES: Residential builders see improved profitability

The MeXvi product allows families to live in their own land while at the same time providing them with construction materials as well as design and technical assistance to build a high-quality home.

FORBES: MeXvi: Enabling Families To Have A Home