avail
单词辨析：
泛指使用工具、设备、服务等，也指利用某人或某项优势。
What does he use for picking up groceries?
他用什么运送食品杂货？
Can I use your shampoo?
我能用你的洗发水吗？
It was obvious that he was just using you.
很明显，他只是在利用你。
He used his position as manager to banquet at public expenses.
他利用自己的经理一职公款吃喝。
指将技术、方法、观念、法律等用于某一领域、流程、活动等中以发挥其作用。
They applied the new technology to this field.
他们把新技术运用到该领域。
Don't you think that these ideas are difficult to apply in practice?
难道你不觉得这些方法很难实际应用吗？
多指利用机会、提议等，常用于 avail oneself of sth 结构中。
How many students can avail themselves of this opportunity each year?
每年多少学生能够利用这种机会？
This hotel encourages the guests to avail themselves of the full range of recreation facilities.
这家酒店鼓励旅客充分利用各种娱乐设施。
指为了某一目的而使用某事物。
This classroom is mainly utilized for training purposes.
这间教室主要用于培训。
You must consider how to better utilize the resources at your disposal.
你们必须考虑如何更好地利用所掌握的资源。
When did the Romans begin to utilize concrete as a building material?
罗马人何时开始使用混凝土作建筑材料的？
相关例句：
Guests should feel at liberty to avail themselves of your facilities.
宾客们应该可以随意使用你们的各种设施。
They tried and tried, but it was all to no avail: they failed.
他们试了一次又一次，可全不中用。他们仍失败了。
Courage could not avail against the enemy fire.
骁勇不足以对抗敌军炮火。
It won't avail against the heavy odds we face.
与我们对手的巨大优势相争是徒劳的。
Many remedies were employed by the physicians for his sickness, but all were of no avail.
对他的病医生们用了许多办法，但都无济于事。
We tried and tried, but it was all to no avail.
我们试了又试，但是毫无效果。