a. 偷工减料的

[ adj ]
of inferior workmanship and materials
<adj.all>
mean little jerry-built houses

Jerry-built \Jer"ry-built`\, a.
1. Built hastily and of bad materials; as, jerry-built
houses.

Syn: slipshod, ramshackle, flimsy.

2. Developed in an unsystematic or inexpert manner; built
haphazardly; -- used of objects, organizations, plans,
etc.
[PJC]