Piston groove
[化] 活塞槽
?? 詞語組成解析
piston
['p?st?n]
n. <機>活塞;
groove
[ɡruv]
n. 溝，槽;[俚語]常規，老套：確定的規范;[俚語]理想狀況;[俚語]非常愉快的經歷;
vt. 刻溝，刻槽;
vi. 極其快樂，極其滿意，過得快活;受愉快的刺激影響;投合，契合;
??? 情景例句
He felt that his life was no longer worth living.
他覺得他的生命已經沒有再活下去的價值了。
You never know.
天曉得。
He lived in this century, was born in Germany and spent the last part of his life in the USA.
他生活在本世紀，出生于德國，在美國度過了他的晚年。