Free of cost
[經] 免費奉送
?? 詞語組成解析
free
[fri]
adj. 自由的;免費的;免稅的;空閑的;
adv. 免費地;自由地，無拘束地;一帆風順地;
vt. 免除;釋放;使自由;解救;
of
[?v]
prep. 關于;屬于…的;由…制成;
aux. 助動詞 [非標準用語、方言] =have [主用于虛擬語氣];
cost
[k?st]
n. 價錢，代價;花費，費用;犧牲;[用復數][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
Hi, Mr. Baker. We met before.
嗨， Baker先生， 我們以前見過面。
I haven't the least idea.
我一點兒也不知道。
In a few years the small workshop had become a large factory which employed seven hundred and twenty-eight people.
幾年之后，小鋪子已經發展成了一個雇有728人的大工廠。