People will say this is by a certain artist and we can look at the materials that he used, and decided if those materials were available during that artist's lifetime.
There are those that predicted another Great Depression happening which doesn't bode well for 2021, but there are also a lot of analysts talking about V-shaped recoveries in many countries.
有些人预测会发生另一场大萧条, 这对 2021 年来说不是好兆头,但也有很多师在谈论许多国家的 V 型复苏。