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oclock2across介词，意为“在……对面”TheSmithslivejusttheriveracrossfrom意为“在……对过”TheyliveacrossusAcross作介词“穿过，横过”之意，着重从事物表面的一边到另一边；through作介词意为“穿过”，着重指从空间一头到另一头。Do
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dlight形容词，意为“轻的，浅色的，明亮的”lightmusiclightgree
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可数名词，意为“方向”。注：表示“朝……方向”，用介词i
Helooksattheroomeverydirectio
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