/rɒd/
a thin straight bar, especially of wood or metal; 杆，棒
记忆技巧
Visual Association
Imagine a fishing 'rod' with a straight line (like the letter 'd') at the end to help you remember the shape and purpose of a rod.
Rhyme Connection
Think of the rhyme 'Rod, rod, straight as a nod,' to link the word with its straight, stick-like appearance.
例句
He used a metal rod to stir the paint. (他用一根金属棒搅拌油漆。)