常先

孩子们在学写连体字以前常先学会用印刷体书写。

Children are often taught to print before they learn joind-up writing .

他常先为别人着想。

He always considers others before himself .

但由于冠状动脉造影术，是通过一个导管插入心脏、是有创性检查；因此，影像学检查，常先用来看看是否有必要进行冠状动脉造影术。

But since it is invasive , requiring that a catheter be inserted into the heart , imaging tests are often used first to see if a coronary angiogram is needed .

鸿渐叫她做的事，她常要先请柔嘉核准。

Whenever Hung-chien told her to do something , she would always have to get jou-chia 's approval first .

对于响应以第1振型为主的高耸结构等结构，常以先求风振系数再求各类风响应较为方便。

It is convenient to express the wind excited vibration of structures in term of gust response factor for tower structures and other tall structures taking only into consideration of first vibration mode .

弟兄俩常因为谁先玩玩具而争吵。

The two brothers often quarrel about who plays with the toys first .

美国人常讲：先有哈佛，后有美国，这是事实。

Americans often say : " First , Harvard ; then the United States ", which is a fact .

这位深入人心的迷人演员毕业于两所常青藤院校——先是耶鲁大学后来去了斯坦福大学。

The actress who has mesmerized us all through all these years went to not one , but two Ivy League schools , Yale and then later to Stanford 。 7 .

为了提高深井、超深井上部大尺寸井眼的钻井速度，常采用小钻头先钻一个井眼后再下入扩眼钻头扩眼的办法，由于改进牙轮钻头的难度较大。

The method commonly used to improve drilling speed in upper large size wellbore of deep and ultra-deep wells is to drill a pilot hole with a small size bit at first and then ream it to a normal size .