Objective To observe the effect of underground part-obturated environment on human health.

目的观察半密闭地下环境对健康的影响。

youdao

By using the close relationship of the tree's underground part and upper part, a simulation method of gravity's effect on the tree shape was established.

同时将树的地下部分与地上部分有机地结合在一起，模拟了基于重力场的三维树形态。

youdao

Staying the decrease of the polysaccharide content of underground part and the total flavonoids content of aboveground part, increased polysaccharide and total flavonoids content in harvest.

延缓地下部分多糖和地上部分总黄酮含量的降低，增加其收获期多糖和总黄酮含量。

youdao

Experts say the best place to be is in an underground shelter, or a small,windowless room in the lowest part of a building.

VOA: special.2010.05.11

The spice ginger comes from the part of the ginger plant that grows underground.

VOA: special.2009.05.19

So far this month, U.S.officials have sent around to other Mexican border cities with the hope that many of them will not work their way back to Juarez and become part of the city's criminal underground.

VOA: standard.2010.04.01

The commission, from Art on the Underground, is part of celebrations to mark the Tube's 150th anniversary.

BBC: Mark Wallinger unveils labyrinth Tube art

The economy grew 7.3% last year, thanks in part to underground activity going legitimate, more than doubling revenues from income taxes.

WSJ: The World Is Flat

In many parts of the country, construction is a significant part of the underground economy.

NPR: Getting Paid Off the Books in America