4个
1定居；
2落到地面上来；
3平息；
4（使）安静下来；有 例句 吗1.I heard that you settle down.我听说你定居了。2. the kite have be settled down by wind.风筝被风吹落到地面。3.My anger had settled down after her exlained.她解释后我的怒火平息了。