blob

1. N-COUNT A blob of thick or sticky liquid is a small, often round, amount of it. (粘稠的) 一滴; 一团[非正式]

...a blob of chocolate mousse. …一团巧克力奶油冻。

2. N-COUNT You can use blob to refer to something that you cannot see very clearly, for example because it is in the distance. 模糊不清的一团东西[非正式]

You could just see vague blobs of faces. 你只能看到一张张模模糊糊的脸。