1.whereby conj. 憑借,相當于"by / through which"

【釋義】 In accordance with which; by or through which.

【例句】He devised a plan whereby he might escape. / He devised a plan by (or through) which he might escape.
他想出了一個可藉以逃脫的辦法。

Whereby shall we find fault with him?
我們憑什么指責他呢？

【聯想】另外，英語中的詞組，in accordance with也可以表達類似的意思，譬如：

I sold the house in accordance with your orders.
我按照你的指示，售出了這所房子。

2.exhale v. 呼氣，發出，散發

【釋義】expel air，give out (breath or an odor)

【例句】：He lit his cigar and exhaled smoke.
他點燃雪茄，然后吐出煙霧。

She exhaled slowly to show her annoyance.
她長嘆一聲，表示厭煩。

【聯想】我們也可以用 expire, breathe out來表達“呼出”這個意思，

如：The doctor told me to breathe in and then breathe out slowly.
醫生叫我吸氣，然后再慢慢地呼出。

3.regulate vt. 管理，調整，控制

【釋義】bring into conformity with rules or principles or usage; impose regulations
【例句】Any of various similar substances found in plants and insects that regulate development.
激素一種存在于植物或昆蟲中的具有調節生長之功能的物質

Your watch is always slow; it needs to be regulated.
你的手表總是慢，需要校準一下。