ludicrous

The idea that we can walk to the moon is absolutely ludicrous.

(Chinese) 我们可以步行去月球的想法绝对是荒谬的。

He looked ludicrous in that giant chicken costume at the formal wedding.

(Chinese) 在正式婚礼上穿着那套巨大的小鸡服装，他看起来滑稽透了。