Tracing ball
[计] 跟踪球
🧩 词语组成解析
n. 描摹, 描图, 追踪\\n[计] 跟踪
ball
[bɔl]
n. 球;棒球（投手投出的）坏球;拇指球;舞会;
vt. 做成球状，使成团块;（指男性）和（女性）交媾（美式英语）;
vi. 呈球形，成团块;[美国俚语、口语]狂欢作乐，消遣;尽情作乐，尽情地玩;
🗣️ 情景例句
I would like to buy some stamps, please.
我想买些邮票。
The data confirm that this product is safe and effective.
数据证实此种产品安全有效。
I'd like to look at some sweaters.
我想看看毛衣。