In current time, the major reason of burglary occurrence is that there exist such weak sectors as architectural and psychological dead space.

当前，入室盗窃发案的主要原因是存在建筑死角和心理死角等薄弱环节。

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Not so long ago, layoffs were concentrated in a few weak sectors: manufacturing, construction, and later mortgage lending.

NPR: August Unemployment At Five-Year High

When selling is isolated and weak sectors drag the market down, it can be considered a buying opportunity for strong stocks.

FORBES: Ominous Bear Flag Pattern Suggests S&P 500 At 1,000

The view isn't surprising given the other weak data reported in economic sectors from manufacturing to retailing.

WSJ: NFIB: U.S. July Small-Business Optimism Index Drops