She is tallish, brown-haired, and clear-skinned.

她身材偏高,棕色头发,皮肤光洁。

With her was a youngish man in a dinner jacket.

和她在一起的是一个略显年轻、身着无尾礼服的男人。

...a tank of greenish water.

一箱有点儿发绿的水

She had entirely lost her girlish chubbiness.

她完全没有了少女时胖嘟嘟的感觉。

...a man of monkish appearance.

一个修道士模样的男人

...his affecting, Tom Petty-ish voice.

他动听的声音颇似汤姆·佩蒂

I'll call you guys tomorrow. Noon-ish.

我明天给你们打电话,中午前后吧。

The nurse was fiftyish.

那个护士大概50岁上下。