from outer spaceby the looksby one's appearance都可以表示根据外表(长相)来…例1. 我们不应该从外表来判断一个陌生人。 We should not judge a stranger by his or her appearance.例2. 告诉他不要从外表判断一个人。 Tell him not to judge people by their looksIn externals从外表看From the looks of one‘s从某人的外表(长相)看例3. 从外表上看,她们是两个丝毫不引人注目的姑娘。 In externals, they were two unobtrusive girls.例4. 从外表看上来,他就是那种没车、没家、没干净衣服,而且没钱的人。 From the looks of him, he had no car, no home, no clean clothes, and no money.希望能帮到你:)