查询词典 spend doing sth

Keep on doing sth:continue doing sth.

不断做某事。

Keep sb. from doing sth.: stop sb. from doing sth.

阻止某人做某事，防止某人做某事

Stop/prevent sb doing sth =keep sb from doing sth.

阻止某人做某事，只是后面一个句子中的from 不可以省略。

Prohibit sb. from doing sth.=prohibit sb.'s doing sth.

禁止某人做某事，条件不允许某做某事

W.w.w.k.s.5.u.c.o.m begin doing/to do begin / start to do sth begin / start doing sth.

1谈及一项长期活动或开始一种习惯时，使用

Begin/ start to do begin/ start doing begin / start to do sth begin / start doing sth.

昨天我看见他在花园里干活了。

W.w.w.k.s.5.u.c.o.m begin begin doing/to do begin / start to do sth begin / start doing sth.

1谈及一项长期活动或开始一种习惯时，使用

Stop sb. from doing sth.和prevent sb. from doing sth.

阻止某人做某事 nQP汕尾全程教育网

There is no point doing sth.; there is no use doing sth.

做…毫无意义e.g。

Increase sth.; add to sth.; help to cause sth.

增加；添加到；促成

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。