be a double-dealer

Metal cock ring soft seat surface pressure to the bearing surfaces, such as the valve core and valve seat is concentric ring surface can be a double tight closure.

金属旋塞表面压向阀座环软支座表面，如阀芯和阀座环表面是同心的，就能得到双重严密的关闭。

Double-stack trains are taking a lot of freight that used to be routed via trucks

以往由卡车运送的很多货物现在都改用双层列车运送了。

Women are caught in a double bind, marginalised in the community if they are not wives and mothers, under excessive pressure to be perfect if they are.

女性陷入了两难境地，如果她不为人妻为人母就会被社会边缘化，如果她为人妻为人母就会承受成为完美的妻子和母亲的巨大压力。

Double-stack trains are taking a lot of freight that used to be routed via trucks.

以往由卡车运送的很多货物现在都改用双层列车运送了。

Double-stack trains are taking a lot of freight that used to be routed via trucks...

以往由卡车运送的很多货物现在都改用双层列车运送了。