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4、suitable
adj. 适宜的；合适的
These films are suitable for adults only.
这些电影只适宜成人观看。
5、washable
adj. 可洗的；耐洗的`
The cushion cover is not washable.
软垫外套不可洗。
ble
adj. 看得见的,明显的,显著的
He showed no visible sign of emotion.
他丝毫不露声色