buoyancy
US /ˈbɔɪ.ən.si/
UK /ˈbɔɪ.ən.si/
1.
浮力, 浮性
the ability or tendency of something to float in water or other liquid or in the air
:
•
The boat's excellent buoyancy kept it afloat even in rough seas.
船只出色的浮力使其即使在波涛汹涌的海面上也能保持漂浮。
•
Helium balloons demonstrate the principle of buoyancy.
氦气球展示了浮力的原理。
2.
乐观, 开朗, 活泼
an optimistic and cheerful disposition
:
•
Despite the setbacks, her natural buoyancy helped her stay positive.
尽管遭遇挫折，她天生的乐观帮助她保持积极。
•
His buoyancy in the face of adversity was truly inspiring.
他在逆境中的乐观精神确实令人鼓舞。