At cost
[經(jīng)] 按成本
?? 詞語組成解析
at
[?t]
prep. （表示位置）在;在（某時間或時刻）;以，達; 向，朝;
n. 阿特（老撾輔幣單位，100 阿特 = 1 基普）;
cost
[k?st]
n. 價錢，代價;花費，費用;犧牲;[用復數(shù)][法律]訴訟費;
vi. 價錢為，花費;估計成本;
vt. 付出代價;估價;使喪失;使付出努力;
??? 情景例句
I'm sorry, I didn't mean to bother you.
對不起，真不想打擾你。
Thanks for the advice,but this is something I have to figure out myself.
謝謝忠告，但是這必須由我自己解決。
The thieves dropped the torch and ran away as quickly as they could.
小偷扔下了手電筒，飛快地逃走了。