Davy's lever
[医] 戴维氏杆(直肠止血杆)
🧩 词语组成解析
lever
['li:və, 'levə]
n. 杠杆;操作杆;工具;
vt. 用杠杆撬动;
🗣️ 情景例句
Their after-sales service was just so bad that I decided to never buy anything from that shop again.
他们的售后服务太差了，所以我决定从此不再能家商店买东西。
The president must have the approval of Congress to declare war.
总统若要宣战，必须获得国会的承认。
He quickly became the leader.
他很快就成了领袖。