Trace dependents
[計] 追蹤從屬單元
?? 詞語組成解析
trace
[tres]
vt. 跟蹤，追蹤;追溯，探索;探索;查找;
vi. 沿著一小徑或道路前進;可以追溯的;
n. 痕跡，蹤跡;微量，極少量;[植]（脈）跡;痕跡;
trace(draw)→回溯
dependents
[d?'pend?nts]
[計] 從屬單元;
??? 情景例句
Since I retired,
自從我退休以后，
The greatest fool is he who worries about what he cannot help.
操心無法可想的事是最大的傻瓜。
Good morning, doctor.
醫生，早上好。