Stepped sprue
[机] 分级进模口
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
n. 浇口, 熔渣, 口炎性腹泻\\n[化] 浇口; 铸口; 流道
🗣️ 情景例句
You need to complete some forms before the class.
上课之前你得填一些表格。
I would like to suggest that we take a coffee break.
我建议我们休息一下喝杯咖啡。
Are they with you in China?
他们都和你一块儿在中国吗？