Stepped cost
[經] 步增成本, 階段成本, 階梯成本
?? 詞語組成解析
v. 踏；行走（step的過去式和過去分詞）
cost
[k?st]
n. 價錢，代價;花費，費用;犧牲;[用復數][法律]訴訟費;
vi. 價錢為，花費;估計成本;
vt. 付出代價;估價;使喪失;使付出努力;
??? 情景例句
Your show doesn't begin until eight thirty.
你的展覽八點半才開始。
This round table weighs about forty-five pounds.
這張圓桌子重大約45磅。
Jim ! Jim ! It's time to get up !
吉姆，吉姆，該起床了！