1·I found a collection of its monthly numbers in my eldest brother's library and devoured them day after day, seated on the doorsill of his study, facing a bit of terrace to the South.
我在大哥的图书室里找到了几本合集，我就坐在他书房的门槛上，朝着南面小小的一方凉台，一天又一天贪婪地读着。
2·Some artists living in China are at the doorsill to this segment.
一些生活在中国的艺术家处在这个阶段的门槛上。
3·Stand in the doorsill of new century, we are facing opportunity already, more facing a challenge.
站在新世纪的门槛，我们既面临着机遇，更面临着挑战。
4·The thing of this backside is us competition ability of a core, also be this category a doorsill.
这个背后的东西就是我们一个核心竞争力，也是这个品类一个门槛。
5·License plate is the has needed together doorsill of the industry.
牌照是行业的一道必过的门槛。