Step costs
[經] 階梯成本
?? 詞語組成解析
step
[st?p]
n. 步，腳步;步驟，手段;步調;級別;
vt.& vi. 舉步，行走;踩，踏上;跨入;輕快地走;
vi. 踏，踩;走;
vt. 跳舞;邁步;使成階梯狀;
n. 費用；訴訟費；損失（cost的復數）
??? 情景例句
How do you spell it?
如何拼寫？
A friend in court is better than a penny in purse.
曩中有錢，不如朝中有友。
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.
一旦我們找到這樣一顆行星，我們就要想辦法將它的恒星射過來的光線遮暗，這樣我們就能徹底“看見”這顆行星，并分析它的大氣層。