暗礁险滩àn jiāo xiǎn tānhidden reefs and dangerous shoals (/shallows) ❍ 行船时必须提防~。When sailing the seas,one must beware of hidden reefs and dangerous shoals. 暗礁险滩àn jiāo xiǎn tān指水下的礁石和危险的海滩。 hidden shoals and dangerous reefs, hidden reefs and dangerous shallows |