YSK You should never swim in the ocean without a lifeguard. Never. But if you do, you should know some standard safety rules.
from /r/YouShouldKnow
YSK 你不应该在没有救生员的情况下在海里游泳。永远不要。但如果你这样做，你应该知道一些标准的安全规则。
YSK 你不应该在没有救生员的情况下在海里游泳。永远不要。但如果你这样做，你应该知道一些标准的安全规则。
YSK You should never swim in the ocean without a lifeguard. Never. But if you do, you should know some standard safety rules.
from /r/YouShouldKnow