?? 詞語組成解析
pin
[pin]
n. 釘;別針，扣針，飾針;大頭針;沒價值的東西;
vt. 壓住;（用釘等）釘住，釘住，別住，扣住;用障壁等)圍住，關住（俚語）抓住;[軍]牽制;
adj. 針的;釘的;銷的;大頭針的;
tumbler
[['t?mbl?]]
n. 平底玻璃杯, 一杯的容量, 雜技演員, 翻斤斗者\\n[機] 滾光機, 滾筒, 齒輪換向器
??? 情景例句
Not too bad, thank you.
挺好的，謝謝你。
Is the production line fully attomatic?
生產線是全自動的嗎？
Work on it had begun before my sister left.
這棟房子在我姐姐離開之前就已動工了，