a weak heart的用法和样例：
- He cannot run because he has a weak heart.
- With such a weak heart she was lucky to come through (the operation).
- Climbing stairs is a tax on a weak heart.
- His illness left him with a weak heart.
- With such a weak heart she was lucky to comethrough(the operation).
- With such a weak heart she was lucky to come through the operation.
a weak heart的相关资料：
a dato a a supplicant message for help a severely disadvantaged area a visibility of one kilometer a promiscuous heap of clothes a dull pupil/class/mind a wordy expression of apology A building of great magnitude a peaceful and secluded place a sketchy knowledge of French a harmonious group of friends