Stepwise installation
[计] 逐步安装
🧩 词语组成解析
a. 楼梯式的, 逐步的
installation
['ɪnstə'leʃən]
n. 安装;装置;永久性军事基地;就职;
in 向内，进入 + stall放 + ation名词后缀 → install安装+ation名词后缀 → 安装；装置；设施
🗣️ 情景例句
I'm still learning.
我还在学习当中。
Is there any discount for the USA Railpass?
火车通行证有折扣吗？
An even harder situation is to be on the platform in good time for a train and still to see it go off without you.
更难堪的情况是虽然及时赶到站台上，却眼睁睁地看着那趟火车启动，把你抛下。