Centering pin
[機] 定心針
?? 詞語組成解析
centering
['sent?r??]
n. 置于中心，定中心;
v. 集中( center的現在分詞 );使聚集在一點;定中心;居中;
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;
??? 情景例句
Good luck and best wishes on your career move.
祝你新的事業一帆風順！
A burden of one's choice is not felt.
自己選的擔子不嫌重。
If you are citing a train, it is always better to be comfortably early than even a fraction of a minted too late.
如果趕火車，早到總比晚到好，哪怕早到一會兒也好。