Don't count your chickens before they hatch.
	凡事不可期望過高 照字面的意思是：在蛋未孵化前，不要先數小雞的數目。也就是說，凡是不要期望過早或過高。 I told him not to count his chickens before they hatch because that woman may not marry him. 我告訴他不要期望太高，因為那個女生未必要嫁給他。