Roll booster
n. 助推器
🧩 词语组成解析
roll
[rəul]
vt. 辗;使（眼球等）左右转动;（使）原地转圈;滚动;
vi. 左右摇晃;翻滚;开始移动，启动;
n. 名册;滚翻;
booster
['bu:stə]
n. （电器的）增压机;助推器，多级火箭的第一级;热情的支持者;
🗣️ 情景例句
Hi. How was lunch?
嗨 。午餐怎么样？
I'd like to have you come to my house for dinner sometime.
改天请到我家来吃饭。
Well, that pair looks nice. How much do they cost?
嗯，那双看来不错。多少钱？