Practice is an integral part of language learning.

是语言学必不可少的一部分。

Food, clothing, shelter and transportation are essential to life.

衣、食、、行是生活中必不可少的。

Fish is always part of the dinner because it represents abundance.

鱼总是晚餐必不可少的，因为鱼象征着年年有余。

And these are white rabbit lollies, because compulsory.

这些大白兔奶糖在新年也必不可少。

Smartphones, led by iPhone, have become an essential part of our lives.

iPhone引领的智能手机已经成为我们生活中必不可少的一部分。

Contouring is pretty much the must-have, you just want a really really chiseled face.

容基本上是美式妆容必不可少的了，要的是那种轮廓分明的脸颊。

His faults are accepted as the necessary complement to his merits.

他的瑕疵在世人的眼中已经成为他的优点的必不可少的派生物。

This level of complexity makes comprehensive training imperative.

维和任务的复杂程度之高让全面的培训变得必不可少。

This has become an essential in my life.

这已经成为我生活中必不可少的东西了。

This is an essential if you live in a city where there is rain.

如在会下雨的城市，这件东西是必不可少的。

And no Thanksgiving meal is complete without —that's right— turkey!

而感恩节大餐有一样东西必不可少，对，那就是火鸡！

So when you're promoting food, a photo is everything.

所以当推荐食物时，照片是必不可少的。

First, gift in language learning is inevitable；second, I must say, perseverance is a decisive factor.

第一，学语言的天分必不可少；第二，坚持不懈的精神起着决定性的作用。

Evidences are indispensable when you want to convince the judge of your innocence.

要使法官相信的清白，证据是必不可少的。

Because butter is so integral to the taste of the croissant, we felt it necessary.

因为对于羊角面包而言，黄油具有画龙点睛的作用，这是必不可少的。

So that continual output is essential to speaking better English but boosting your motivation.

持续的输出对于一口流利的英语是必不可少的，但也能增强的动力。

Galen says a good dose of vegan food is a must for him.

加伦说，对他来说每天摄入一定量的素食是必不可少的。

In man's early days, competition with other creatures must have been critical.

在人类早期，人类与其他生物的竞争一定是必不可少的。

What is the one essential food in your diet?

饮食中必不可少的食物是什么？

Treatments for those who continue to get sick will also be needed.

对于那些持续生病的人来说，治疗也必不可少。