2-d
二維的\\n平面的\\n二元的（two dimensional）
??? 情景例句
and make sure that it is in good condition
確定它狀 良好
Love sought is good, but given unsought is better.
追求而得的愛情固然美好，但不經追求而得的愛情更為美好。
In man's early days, competition with other creatures must have been critical.
在人類早期，人類與其他生物的競爭一定是必不可少的。