Back impeller
[化] 后弯叶轮; 后弯式叶轮
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
n. 推进者, 叶轮\\n[化] 叶轮
🗣️ 情景例句
Many students are working at part time jobs.
许多学生兼职打工。
When the lights went out, I was washing my hair.
当熄灯的时候，我在洗头。
Later we learnt that there was a very important person on board.
后来我们才得知，飞机上坐了一位非常重要的人物。