1、essential

絕對必要的;必不可少的;基本的

It was absolutely essential to separate crops from the areas that animals used as pasture.

將莊稼和放牧區分開絕對必要。

As they must also sprint over short distances, speed is essential.

由于他們也必須進行短跑，因此速度至關重要。

基本的;本質的；根本的

Most authorities agree that play is an essential part of a child's development.

大多數權威人士都同意，玩耍在孩子成長過程中起著非常重要的作用。

In this trial two essential elements must be proven: motive and opportunity.

在這次審訊中，必須證明兩個基本因素：動機和時機。

（某學科的）基礎，基本知識

the essentials of everyday life, such as eating and exercise.

飲食、鍛煉等日常生活的要素

This has stripped the contest down to its essentials.

這就使比賽精簡到最基本的環節。

2、product

產品；制品

Try to get the best product at the lowest price.

盡量以最低的價格買到最好的產品。

South Korea's imports of consumer products jumped 33% in this year.

今年，韓國消費產品的進口激增了33%。

產物

We are all products of our time.

我們都是這個時代的產物。

The bank is the product of a 1971 merger of two Japanese banks.

這家銀行是由兩家日本銀行于1971年合并而成。