Examples
zì wǒ自我huái yí怀疑shì是cōng ming聪明de的dì第yī一biāo zhì标志。
自我怀疑是聪明的第一标志。
To have doubts about oneself is the first sign of intelligence.
红色是危险的标志，与绿色相对。
Red, as opposed to green, is a sign of danger.
红色，相对于绿色，是危险的标志。
Red, as opposed to green, is a sign of danger.