n. 取出,抽出;血統,家世,出身;[化]提取(法),萃取(法),回收物,提出物,精煉;[數]開方,求根;
ex分開+tract拉+ion表名詞 → 提煉;抽出
??? 情景例句
Near the Exit sign.
就在出口標志附近。
It is better to wear out than to rust out.
與其銹掉,不如用壞。
it requires 97 per cent less energy to travel the quarter of a million miles from the Moon to Earth-orbit than the 200 mile-journey from Earth's surface into orbit!