Defoliant
n. 脫葉劑, 落葉劑\\n[化] 脫葉劑
?? 牛津釋義
defoliant
n
chemical used on trees and plants to destroy the leaves 脫葉劑.
??? 情景例句
Matches?
火柴？
I told him to come in and wait here.
我告訴他進(jìn)來(lái)在這里等。
the necessary method of study is to group the relevant material and to take note of all possible variant forms and conditions.
應(yīng)采取的研究方法是，把有關(guān)各方面的材料匯集起來(lái)，同時(shí)注意任何可能出現(xiàn)的異常情況和條件。