投资学用英文怎么说
投资学的英文：investment
investment principles
investment是什么意思：
n. 投资（额）；投入；可投资的东西
[*]invest material
覆盖材料 [*]profits and losses on disposal of investments
转让投资的损益 [*]He bought it purely as an investment.
他纯粹是作为投资而购买的。[*]Antiques are a very safe investment.
古玩是一种非常保险的投资对象。[*]Networking is an investment not a nuisance.
人际网络是一项投资而不是浪费。principles是什么意思：
n. 原则，原理；起源；主义；道义
[*]principle of discrimination
区别原则[指战时区别军事/非军事目标] [*]Adhesion to the principle of independence and abstract is infraction of the principle of honesty.
固守独立抽象原则是有悖于诚实信用原则的。[*]He was a man of the highest principles.
他是个道德崇高的人。[*]To instruct in a body of doctrine or principles.
传授以教条或信条的方式来教授、教导 [*]The principle or law that orders the universe.
（佛教的）法约束天地万物的规则或法律
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