I feel very honoured to declare the commencement of Beijing International Conference on Space Exploration.

This contract is effective from the date of commencement of service.

本合同自聘期开始之日生效.

A risk assessment should be conducted before the commencement of the blasting operation.

在开始爆石作业前应进行风险评估.

Evacuation of all personnel from the three tunnels was required before the commencement the blasting operation.

爆石作业开始前,三条隧道内的工人都必须疏散.

A deep voice announced the commencement of the wedding rites, and the music began.

一个瓮声瓮气的嗓音宣布拜堂开始, 乐队开始吹打.

Who gave your commencement address?

谁给你们做了毕业演说? oration指 “正式演说”,如:

Following the commencement ceremony of the university, diploma ceremonies were held in colleges and schools.

大学的毕业典礼结束之后, 便是由各个学院自己举办的学位颁发仪式.

Thank you for giving us this singular privilege of being part of this commencement ceremony.

谢谢你们给予我们参加这次毕业典礼的殊荣.

The ceremony commences at 2: 30 p.m.

典礼下午二时半开始.

For example, drawings must be completed 30 days before works commences.

例:图纸必需在开工前30天送达.

The company commences the licensed production of steering systems.

获得生产转向系统的专利.

Service revenue recognition commences upon the launch date of the related service.

服务收入的确认可依据服务发生的开始日期.

Annual Subscription commences on 1 st May of each year.

续会日期为每年五月一日.

Music is the literature of the heart; it commences where speech ends.

音乐是心灵的文学; 语言述尽后它开始.

Frame # 2: The arm pull commences immediately upon entry.

图2.右手入水后即刻开始划水.

This chapter commences with an analysis of individual buying behavior.

本章节以对个人购买行为的分析开篇.

Education commences at the mother's knee.

教育始于母亲膝下.

In the joking commences a rottenness.

一开玩笑就会出现不好的苗头.

On this high note the puppet show commences.

木偶戏就在这阵高昂的调子里开场了.

Seed development in most instances commences following fertilization of the ovule.

大多数种子的形成是从胚珠受精开始的.

These substances are slowly depleted as the embryo commences to grow.

随着胚开始生长,这些物质也慢慢用尽了.