Training wheels
= stabilizer (2)
🧩 词语组成解析
training
['trenɪŋ]
n. 训练;培养;（枪炮，摄影机等的）瞄准;整枝法;
v. 训练，培养( train的现在分词);教育;瞄准;整枝;
n. 旋转；车轮（wheel的复数）
🗣️ 情景例句
Now, we always use different packing for different goods.
我们一向是不同的货物用不同的包装。
These shoes are worn-out.They've lasted a long time.
这些鞋子旧了。已经用了很长时间了。
Who was second? Who was third?
谁是第二？谁是第三？