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/ˈpɛblz/
鹅卵石；小圆石（pebble的复数形式）
The 🔊 children 🔊 were 🔊 throwing 🔊 pebbles 🔊 into 🔊 the lake 🔊 .
孩子们正往湖里扔鹅卵石。
The children were throwing pebbles into the lake.
