inferior quality

基本解释

The phenomenon of fake and phoney commodity is the activity of cheating consumers by producing and selling fake or inferior-quality commodities.
“假冒伪劣现象”就是“制售不真或质量低劣商品以欺骗消费者的行为”。
For instance, inferior-quality medicines not only aggravate a patient’s condition, but also tend to threaten his life and, what’s worse, to result in his death.
例如，伪劣药品不仅使病人的病情恶化, 而且往往会威胁病人的生命, 更糟的是, 导致病人的死亡。
For instance, inferior-quality medicines not only aggravate a patient's condition, but also tend to threaten his life and, what's worse, to result in his death.
例如，伪劣药品不仅使病人恶化，而且往往会威胁病人的生命，更糟的是，导致病人的死亡。

While the professors have made quite a stir in the press, Corning points out that the fiber produced by the professors has not come up to the quality of the existing Corning fiber--inferior in the important broad band qualities needed for carrying the varied communications of the future.
FORBES: The Trials Of Amory Houghton Jr.
Government-supported industries end up suffering from excess capacity, making products that are inferior in quality to those produced by overseas competition, and yet too costly for local consumers.
FORBES: Why China Has Yet To Develop Winning Industries
However, if your vehicle doesn't have a factory-fitted USB port, connecting your MP3 player can often result in a maze of wires, inferior sound quality, and no remote control function.
ENGADGET: Ford USB Music Box adds mass storage playback, smartphone charging to AUX-enabled receivers