Tracer element
[化] 示踪元素
🧩 词语组成解析
tracer
['treisə]
n. 追踪者，描图者，（铁笔等）绘图工具;
element
['ɛləmənt]
n. [化]元素;要素;原理;[电]电阻丝;
🗣️ 情景例句
And it wasn't just ice cream, was it?
这惊喜还不仅是冰淇淋， 对吗?
I told him to stay till he calls.
我告诉他留下来等他打电话来。
On arriving at the shore, the girl struggled up the cliff towards the light she had seen.
到达岸边后，姑娘朝着她看到的灯光方向挣扎着往峭壁上爬去。