首先

First, pay attention to the high attic.

首先，要注意高阁楼。

Firstly, The sufficient con-ditions of the existence and uniquity of the positive equlibria by applying functional derivative isobtained; Secondly, the global attractability of the positive equlibria is investigated by charateristicroots theory and oscillation theory; Thirdly, regarding the delay as a parameter, conditions of theexistence of Hopf bifurcation and the peridic solution, furthermore, the form of the approximateperidic solution are obtained; Finally, Some specific examples are given and the solution diagrameappears by Matlab.

首先利用导数性质，得到了该模型正平衡态存在惟一性的充分条件；其次，利用特征值和振动性理论得到了该模型正平衡态全局渐近稳定性充分条件；然后，应用Hopf分支理论证明了该模型Hopf分支及近似分支周期解的存在性，并给出了周期解的近似表达式；最后，借助于MATLAB数学软件，举例并绘出了模型数值解的拟合图象，验证了文中定理条件的可行性。

First, I'll need to explain what Law of Attraction is and how it works.

首先，我需要解释什么是吸引力定律并且它是如何运作的。

In the paper, the existence of the attractor in a two-dimensional hyperchaotic discrete system is studied.

首先理论上分析了一个二维离散超混沌系统混沌吸引子的存在性。

First of all, wipe the aubergine and trim off the stalk end, then use the very sharpest knife you have to cut it lengthways into 8 thin slices about inch (5 mm) thick.

首先，擦净茄子和切掉茎端，然后使用非常尖锐的刀把它切成薄片，大约切1 / 4英寸(5毫米厚)。

"No, we have to sell this one first," replied the auctioneer.

"不，我们必须首先拍卖这个，"拍卖人答道。

They were pioneers in identifying the fundamental features of formal organizational structure, audaciously clinging to the view that all organizations contain certain common structural characteristics.

他们首先对正式组织结构的基本特徵进行了定义，并大胆地推导出所有组织都有的普遍结构特徵。

It has been shown that any 3×3 ABCDEF augmented matrix,which describes a misalighed optical system,can be represented by an ordered product of basic matrices of , and types.

Casperson[1] 首先研究了描述轴对称光学系统 2× 2矩阵的分解及系统的合成问题。对于实际光学系统，例如谐振腔，由于安装和调整误差、光学系统工作时外界环境产生的微扰、变形而产生失调。

First, the specimens are heated to the temperature of 1150, 1200 and 1250 to determine the grain size of austenite.

首先将试样分别加热到1150℃、1200℃、1250℃的温度下，测定了加热奥氏体晶粒大小。

IF you want to buy an Australian home, you should first have to call Australia home.

如果你想要在澳洲买房子，那你首先必须把澳洲称之为家。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷