不可缺少的

So far, the waterage is still a indispensable major vehicle.

时至今日，水路运输依然是不可缺少的重要交通工具。

Despite the weather map forecasting with empirical and subjective, but still is an indispensable basis for the forecast.

尽管天气图预报带有经验性和主观性，但至今仍然是不可缺少的预报依据。

Wilkie Collins as the father of British detective stories, he also is one of the world history of a detective story writer indispensable.

威尔基·柯林斯被誉为英国侦探小说之父，他亦是世界侦探小说史上一位不可缺少的作家。

Both Xtra extensions belong in every Director developer's tool kit.

这两个插件是每个Director开发人员工具箱中不可缺少的。

Short-term load forecasting for industrial corporations is indispensable to them when it comes to units combination, power transportation and load attemperation.

对大工业企业进行负荷预测是确定机组组合方案、企业与区域电网功率输送方案和负荷调度方案所不可缺少的。

Extra- curricular activities are an integral part of school life.

课外活动是学校生活不可缺少的一环。

Extra curricular activities are treated as a indispensable part of school life.

课外活动是学校生活不可缺少的一环。

Charge amplifier can be applied to Eclectics, Aerospace, Shipping and other important industry and its also an indispensable important means of teaching and research.

电荷放大器可以用于电子、航空航天、船舶等重要工业，同时也是教学科研不可缺少的重要手段。

The Internet seems to have become an indispensable part in modern lire.

互联网似乎已经成为不可缺少的一部分在现代里拉。

As musci is an indispensible part of my life, I think music will be my major for my college life.

音乐在我生命里是不可缺少的一部分。所以我想以后想在大学读音乐系。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。