Usages of kaeeru
電気代 が 高い なら、 省エネ家電 に 替えた ほう が いい。denkidai ga takai nara, syouenekaden ni kaeta hou ga ii.
If your electricity bill is high, you’d better switch to energy-saving appliances.
古い 電池 を 新しい 電池 に 替ます。hurui denti wo atarasii denti ni kaemasu.
I replace the old battery with a new one.
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