中英释义：
双语例句
太阳发出光和热。
The sun emits light and heat.
所有的恒星都会发出光和热。
All the stars send out light and heat.
城市一直是文明的壁炉，在黑暗中发出光和热。
Replaces of civilization whence light and heat radiated out into the dark cold world.
重点词汇
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发出
send out; deliver; issue; dispatch; utter; strike; sound; emit; emanate; beam; blare; give off; send forth; give vent to; give out; emission