When you look at something for too long, you'll get tired of it.
When you look at something for too long, you'll get sick of it.
Hi there.
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「飽きる」は"get tired of..."か"get sick of..."のフレーズになります。なので、見すぎると飽きるは：
"When you look at something for too long, you'll get tired of it"
"When you look at something for too long, you'll get sick of it"
になります。
もっと詳細に言いたい場合は、この様に言い換えることができます：
"When you stare at a painting for too long, you'll get bored of it"
「絵画を長く見つめすぎると、飽きる」
"I'm sick and tired of hanging out with my brother"
「兄弟と遊ぶのにはもう飽き飽きだ」
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Hope this helps!
日本 
