Piston expander
[化] 活塞式膨胀机
🧩 词语组成解析
piston
['pɪstən]
n. <机>活塞;
expander
[ɪk'spændə]
n. 使增大者，使身体健壮的强身器具;
🗣️ 情景例句
A construction company. Roads, bridges, big stuff.
一家建筑公司。修路， 筑桥， 都是大工程。
No,he doesn't have one.
不，他没有。
The hospital had been bombed and Hans had made his way back into Western Germany on foot.
医院遭到轰炸，汉斯步行回到了西德。