Tracking filter
[电] 追踪滤波器
🧩 词语组成解析
tracking
['trækiŋ]
n. 跟踪;
v. 跟踪( track的现在分词 );跟踪摄影;留下（脏）足迹;追随（潮流等）;
filter
['fɪltɚ]
n. 滤波器;滤光器;滤色镜;[化] 过滤器;
vi. 过滤;透过;渗透;
vt. 过滤;滤除;
🗣️ 情景例句
It was an extremely difficult and dangerous task.
这是一项极度困难的危险的工作。
The buyer has the option of cancelling the contract.
买主有权撤消合同。
why have we had no visitors from outer space yet?
那么我们为什么还未见到外层空间来访的客人呢？