1.

　　Bubbles are small balls of air or gas in a liquid.

　　2.

　　A bubble is a hollow ball of soapy liquid that is floating in the air or standing on a surface.

　　3.

　　A bubble is a situation in which large numbers of people want to buy shares in a company that is new or not yet financially successful, and pay more than the shares are worth. When it becomes clear that the shares are worth less than people paid for them, you can say that the bubble has burst.

　　4.

　　In a cartoon, a speech bubble is the shape which surrounds the words which a character is thinking or saying.

　　5.

　　When a liquid bubbles, bubbles move in it, for example because it is boiling or moving quickly.

　　6.

　　If something bubbles, it is very busy or lively.

　　7.

　　A feeling, influence, or activity that is bubbling away continues to occur.

　　8.

　　Someone who is bubbling with a good feeling is so full of it that they keep expressing the way they feel to everyone around them.

　　相关词组：bubble overbubble up