1.
it calls for mastery of the techniques involved in handling modern arms and equipment and of the new tactics entailed.
要熟练掌握使用现代化武器装备的新技术，以及随之而来的新战术。
2.
be able to use(sth);have at one's disposal
能使用（某事物）;由某人随意支配;掌握;掌管
3.
So use it,and embrace it,you'll be better off for it.
使用它并接受它，你会更好地掌握它。
4.
they say, very user-friendly.
他们说很容易掌握如何使用它的。
5.
It is our responsibility to help the user master the usage of this machine.
帮助用户掌握这个机器使用方法是我们的责任。
6.
Try to grasp the word-formation and usage of adverbs.
初步掌握副词的构成方式以及使用方法。
7.
Good knowledge of measurement and instrumentation for antenna design.
掌握天线指标的测量方法和相关仪器的使用。
8.
Weapon Mastery talent runes now have a level requirement of 20.
武器掌握天赋符石现在要求20级才能使用。
9.
It is difficult for English learners to use articles in English sentences and the zero article seems to be more perplexing.
英语冠词的使用复杂,很难掌握,而零冠词的使用则更令人困惑。
10.
She said English was vital because of its wide use all over the world.
她说英语在全世界广泛使用，使得掌握这门语言至关重要。
11.
These tests gave them the correct information about air pressure on curved surfaces.
这些试验使他们掌握了空气作用在弯曲表面时的实际情况。
12.
In the USA mineral rights are often vested in private hands and royalty is thus not thought of as a tax.
在美国，矿产权往往掌握在私人手中，故矿山使用费不作为税收看待。
13.
Such solutions were more manageable, more perspicuous, and more readily used for calculation.
这样的解，在计算中是更易于掌握的，更明白的，并且是更易于使用的。
14.
Once you have gained the tool,you have mastered the tool,you have to use it.
一旦你得到了这个工具，掌握了这个工具，你一定要使用它。
15.
"You've got to get the knack of working both arms at once," he said. "It takes a little practice."
“你得掌握同时使用双臂的诀窍，"他说，"这需要练习一下。
16.
Consumers shall make an effort to grasp knowledge about the commodities and service they want and to acquire the skills necessary for using them.
消费者应当努力掌握所需商品或者服务的知识和使用技能，
17.
The sum of words used by, understood by, or at the command of a particular person or group.
语汇量被一特定的人或群体所使用、理解或掌握的词的数量
18.
Action taken or a device used to learn something about the state of a network.
为了掌握网络状态的有关信息而采取的操作或使用的设备。