by-pass的音標是[ba?"pɑ?s]，基本意思是“旁路，分流；旁路通道；分流術；繞過，避開” 。其速記技巧是：可以聯想物理知識，血液在人體內通過各種管道循環流動，其中一些管道被堵塞了，血流無法通過，但可以通過其他管道繞過堵塞的地方繼續流動。

By-pass的英文詞源是“by”加上“pass”，意為“繞過、避開”。它的變化形式主要有名詞bypass（繞過、旁路）和動詞bypass（繞過、避開）。相關單詞有bypass surgery（旁路手術）、bypass valve（旁路閥）、bypass tube（旁路管）、bypass network（旁路網絡）、bypass flow（旁路流量）、bypass ratio（旁路比率）等。這些單詞在醫學、工程和物理學等領域都有廣泛的應用。

例如，bypass surgery是指通過繞過或避開某些器官或組織的病變來治療疾病的一種手術方式，常用于心臟手術中。bypass valve則是指用于旁路管道或閥門的裝置，可以有效地將流體從一條路徑轉移到另一條路徑，避免堵塞或損壞。

總之，By-pass作為英語中的一個常用詞匯，其變化形式和相關單詞在各個領域都有廣泛的應用，體現了英語詞匯的多樣性和靈活性。

by-pass短語：

1. by-pass valve 旁通閥

2. by-pass flow 旁路流量

3. bypass system 旁路系統

4. bypass surgery 旁路手術

5. bypass machine 旁路機器

6. bypass route 旁路路線

7. bypass treatment 旁路療法

例句：

1. The valve was adjusted to open the by-pass route.

(調整閥門以打開旁路路線。)

2. The patient underwent bypass surgery to alleviate his heart condition.

(病人接受了旁路手術以緩解他的心臟狀況。)

3. The bypass machine is used to support the patient"s blood circulation during surgery.

(在手術期間，旁路機器用于支持病人的血液循環。)

4. The by-pass valve is crucial for maintaining the flow of blood through the heart.

(旁通閥對于維持血液通過心臟的流動至關重要。)

5. The by-pass surgery was successful and the patient is now recovering well.

(旁路手術成功，病人現在正在康復中。)

6. The by-pass route is often used to avoid traffic congestion during peak hours.

(旁路路線通常用于避開高峰時間的交通擁堵。)

7. The bypass treatment has become a popular alternative to traditional surgery for heart disease.

(對于心臟病，旁路療法已成為傳統手術的一種受歡迎的替代方案。)

英文小作文：

Title: The Benefits of a By-Pass Surgery

When it comes to heart disease, many people are faced with the decision of whether or not to undergo bypass surgery. Although it is a serious procedure, it can be a lifesaving option for those who are suffering from severe blockages in their coronary arteries.

The benefits of a bypass surgery include improved blood flow to the heart, reducing the risk of further blockages, and improved heart function, which can lead to a decrease in the need for future medications and hospitalizations. Additionally, the surgery can often be performed quickly and with minimal pain and recovery time, making it an attractive option for many patients.

However, like any surgical procedure, there are risks involved, including infection, bleeding, and damage to surrounding tissues. Therefore, it is essential to discuss the risks and benefits of the surgery with your doctor and make an informed decision based on your individual circumstances.

In conclusion, if you are considering undergoing bypass surgery for heart disease, it is important to weigh the benefits against the risks and make an informed decision based on your personal situation.