dud

n.

[军]哑弹；无用的人或物；衣服，个人物品；

adj.

无用的；不完善的；

复数：duds

1. How can we be expected to carry out our jobs with the dud equipment you gave us?
   你怎么能指望我们用这些你给的烂设备来完成工作呢？

1. During yesterday's sham battle, party A fired a dud.
   昨天的军事演习，甲方放了一个哑炮。
2. This battery is a dud.
   这电池是废的。
3. The new manager is a complete dud.
   新经理完全是个废物。
4. The whole plan turned out to be a dud.
   整个计划到头来完全失败了。
5. Two of the fireworks in the box were duds.
   盒子里的烟火有两个是坏的。

Dud, A Derivative-Free Algorithm for Nonlinear Least Squares
Directory of useful decoys, enhanced (DUD-E): better ligands and decoys for better benchmarking
Dud of an Opener for Penguins
In-camera dud image management
FieldScreen: virtual screening using molecular fields. Application to the DUD data set
Comprehensive Comparison of Ligand-Based Virtual Screening Tools Against the DUD Data set Reveals Limitations of Current 3D Methods
Comparison of ligand- and structure-based virtual screening on the DUD data set.
Induction of traps by Ostertagia ostertagi larvae, chlamydospore production and growth rate in the nematode-trapping fungus Duddingt...
Filter material construction and method
Structure of a Mitochondrial Supercomplex Formed by Respiratory-Chain Complexes I and III