Signal tracing
[計] 信號追蹤
?? 詞語組成解析
signal
['s?gnl]
n. 信號，暗號;預兆，征象;動機;導火線;
vt. 向…發信號;用動作（手勢）示意;以信號告知;
vi. 發信號;
adj. 顯著的，優越的;暗號的，作信號用的;
sign記號，信號+al表名詞 → 信號
n. 描摹, 描圖, 追蹤\\n[計] 跟蹤
??? 情景例句
Excuse me, but may I ask how old you are?
對不起， 我能問一下你多大了嗎？
It is easier to give good counsel than to follow it.
提出忠告易，照著辦事難。
As soon as he opens the gate from the outside, he comes into the garden and waits until the gate shuts.
它從外面把門一打開，就走進花園，等著門自動關上。