1. evaluate：
意思是：確定…的數值或價值或者對數值或價值仔細地考察和判斷、評價.
evaluate 很少用來表示用猜測的方法“估價”或“估計”某物的市場價值,而是用來表示比較準確的“評價”.如：
By marks in numbers or letters, the teacher evaluates a student's work. 老師用數字或字母的符號來評價學生的作業.
The scientists were still evaluating their data. 那些科學家還在評價他們的資料.
2. estimate：
意思是：恰當地推測物品的數量、程度、規模,狀況或價值
對…形成判斷所表示的“估價”或“估價”只是猜測,甚至只是壹種想法.如：
Though it may be possible to measure the value of material goods in terms of money, it is extremely difficult to estimate the true value of the services which people perform for us.
雖然用金錢來衡量物質產品的價值是可能的；但要估計人們為我們提供的服務的真正價值卻極為困難.
One authority made a census of the spiders in a grass field in the south of England, and he estimated that there were more than 2,250,000 in one acre.
壹位權威對英國南方壹塊草坪上的蜘蛛作過統計,他估計每英畝有2,250,000多只蜘蛛.