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
The policemen could not cope with the crowds.
警察不能对付群众。
Please don't forget.
请不要忘记。
No, she bought them in the U.S.
不。她是在美国买的。