Idioms
in sync
moving or working at exactly the same time and speed as somebody/something else 同步 in agreement with somebody/something; working well with somebody/something Topics Discussion and agreementc2一致;协调
out of sync
not moving or working at exactly the same time and speed as somebody/something else 不同步 not in agreement with somebody/something; not working well with somebody/something Topics Opinion and argumentc2不一致;不协调