H attenuetor
[电] 见H network
🗣️ 情景例句
This is perfectly feasible.
这是完全可行的。
In secondary school, children get more advanced knowledge.
中学的小孩会得到进一步的知识。
Apart from an interesting-looking carved dagger, the box was full of crockery, much of it broken.
除了一柄式样别致、雕有花纹的匕首外，货箱内装满陶器，而且大部分都已破碎裂。