问ORA-00907:使用FK时缺少右括号

EN

SQL>
SQL> CREATE TABLE Recipe
(Quantity_used DECIMAL (2,1)
FOREIGN KEY "ICECREAM_ID"
REFERENCES icecreamGT(Icecream_id),
FOREIGN KEY (ingredient_id) REFERENCES ingredient (Ingredient_name),
);
  2    3    4    5    6  FOREIGN KEY "ICECREAM_ID"
*
ERROR at line 3:
ORA-00907: missing right parenthesis

CREATE TABLE Recipe 
(
Quantity_used DECIMAL (2,1),
FOREIGN KEY (ID_icecream)
REFERENCES icecreamGT(Icecream_id)
FOREIGN KEY (ID_ingredient)
REFERENCES ingredient(Ingredient_name)
);