punchy ['pʌntʃi]

1.晕头转向的（形容词）;

2.讲话有力的（形容词）

1. (adjective) Disoriented and wobbly as if from a series of punches to the head.

2. (adjective) Describing spoken or written language that is forceful and produces great impact.

EXAMPLE 1: The engineers worked so long and hard without sleep on the project that they became punchy and could barely stand up.

工程师为了这个项目废寝忘食，因而变得头昏脑胀，几乎不能站立。

EXAMPLE 2: In his speech yesterday the dynamic young CEO used short, punchy sentences that excited his audience.

在昨天的讲话中，这位充满活力的年轻CEO以简短有力的词句令观众激动。

tough to swallow

不令人信服

A slang expression describing anything that is hard to believe. (NOTE: also "hard to swallow")

EXAMPLE: The employee's elaborate excuses about why he was late to work were tough to swallow, and he was fired.

这位员工为其迟到而精心编造的理由令人难以信服，因而遭到解雇。