49
(A)saw
(B)seeing
(C)had seen
(D)to have seen

see sth in sth (phr) to believe that someone or something has a particular quality看出…有（某種特質）

Elephant ivory has been exported from Africa and Asia for hundred of years.

1.象牙現在已一直是被出口自非洲和亞洲長達一百多年之久。

Throughout the colonization of Africa, ivory was removed to be used for piano keys, billiard balls and other expressions  of exotic wealth.

2.遍及整個非洲殖非地的象牙被搬移，這些被搬移的象牙將會被使用在  鋼琴鍵，撞球、和其它異國財富的象徵。

World wars and the subsequent economic depressions caused a pause in this luxury commodity, but increased prosperity in the early 1970s saw a revival .

3.世界大戰和隨後的經濟肅條 造成了暫時的停止消費在奢侈品，但在1970年代的戰後逐漸繁榮看見了(經歷)甦醒(奢侈品消費)

Japan, relieved from its exchange restrictions imposed after World War II, started to buy up raw ivory for the production of hankos—the name seals.

4.日本, 解放從日本的交換條約(被2次世界大戰強加的條約)，開始買光(大舉購買)未加工的象牙為了生產印章。

Prior to  this period, most name seals had been made from wood with an ivory tip, carved with the signature.

5.在這年代之前(1970年代前)，多數的姓名印章過去一直是從木頭加象牙製的前端。這象牙做的前端被刻上識別符號。

But increased prosperity 49 the formerly unseen solid ivory hankos in mass production.

6.但在(1970年代的侈奢侈品的)戰後逐漸繁榮看見(經歷)了前所未見純象牙印章(不加木頭)的大量生產。

By the 1970s, Japan consumed  about 40% of the global trade; another 40% by Europe and North America, often worked in Hong Kong, which was the largest trade hub, with most of the rest remaining in Africa.

7.據1970年代，日本消費(耗)了約40%全球交易(沒寫消耗什麼，那就是指句首的主題Elephant ivory 象牙)。其它的40%是歐洲和北美消費(耗)。消費全球40%象牙的日本常常在香港是進行交易(消費)，香港是最大了交易中心.日本消費(交易)大多數非洲所遺留的象牙。

World wars and the subsequent economic depressions caused a pause in this luxury commodity, but increased prosperity in the early 1970s saw a 47 . Japan, 

Prior to  this period

But increased prosperity saw the formerly unseen solid ivory hankos in mass production.

=>1970年代，看見(經歷)了前所未見象牙印章的大量生產, 在侈奢侈品日益繁榮經濟時代( in the early 1970s)。

But increased prosperity saw the formerly unseen solid ivory hankos in mass production.