职守
She looked old and thin with sunken cheeks and hollow eyes.
她看上去又老又瘦, 
陷, 眼圈发
。
，沉入水底
陷；下陷She looked old and thin with sunken cheeks and hollow eyes.
她看上去又老又瘦, 陷, 眼圈发。
His cheeks were sunken from hunger.
他
面因饥饿而陷。
If we can get some strong ropes or wires around the sunken boat, we might be able to haul it up.
如果能用一些结实绳子或金属缆绳拴在沉船周围, 或许我们能把它拖上来。
In any navigation channel, the following activities are prohibited: abandoning sunken vessels, laying fishing implements impedimental to navigation, and cultivating aquatic plants.
在航道内不得弃置沉船，不得设置碍航渔具，不得种植水生植物。
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