isolated and helpless; all alone with no one to rely on; solitary and friendless
他独自一人来到异乡，面对陌生的环境和人群，常常感到茕茕孤立。
Arriving alone in a foreign land, facing unfamiliar surroundings and people, he often felt isolated and helpless.
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isolated and helpless; all alone with no one to rely on; solitary and friendless