查询词典 beforehand

If you know you will be late, it is polite to notify the teacher beforehand.

如果你知道你将会迟到，事先通知老师是一个有礼貌的做法。

We need to make accurate estimation beforehand.

我们需要事先作出准确的估计。

We need to make an accurate estimate beforehand.

我们需要事先作出准确的估计。

If you are going swimming, do not eat beforehand.

如果你要去游泳，事前不要吃东西。

You need to research your business beforehand .

你需要事先去为你的工作做个研究。

We need to make a accurate estimate beforehand.

我们需要事先作出准确的估计。

In case of being away,I will let you know beforehand.

如果外出，我会事先告诉你的。

Also I wanted to know beforehand what he wanted to talk about.

我也想预先知道他想谈什么。

We have to make an exact estimate beforehand.

我们需要事先作出准确的估计。

You feared that I should be beforehand with you.

你是害怕我会捷足先登的。

But GST= 0.156, Nm=1. 588. As a result, the foundation of Youyongchi Avicennia marina population was the result of the migration of hypocotyles and human factors.

这项工作可以为海岸防护林中新引进种类的判定以及为研究种群建立者效应方法的确定提供科学依据。

The two-dimensional CDRC-ADI-FDTD update equations for collision unmagnetized plasma are induced. The unconditional stability of the CDRC-ADI-FDTD formulation for collision unmagnetized plasma is obtained by the examples.

推导了碰撞非磁化等离子体中的二维CDRC-ADI-FDTD迭代公式，并用算例验证了碰撞非磁化等离子体CDRC-ADI-FDTD算法也是无条件稳定的。